Changed ignition coils, did not fix cutting out
09-05-2016, 03:54 PM
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Changed ignition coils, did not fix cutting out
I changed the coils (2006 34k)because the engine would cut out when it got hot but this only happens when it's around 90° or hotter outside. Two days ago it was in the 70s and the car ran like a stuck pig. Today it is in the 90s and I barely made it to a gas station. I had driven it about an hour when it was cooler and later in the day when it was hotter it started cutting out on acceleration. Got to the gas station and filled the tank, it had been about one half full. It ran better until about 1/8th empty when it started hesitating again and I pulled into another gas station and filled it and it ran better until I got home.
So my problem is still there when the weather is in the 90s or hotter.
Any suggestions?
So my problem is still there when the weather is in the 90s or hotter.
Any suggestions?
09-05-2016, 07:00 PM
#2
You gonna eat that?
iTrader: (1)
First off, don't let your fuel get below 1/4 tank. The fuel pumps are kept cool by the gas.
Habitually running the tank below that can make the pump get hot and wear out prematurely, and there are cases where hard turns can result in fuel starvation and engine damage.
I had a similar experience on a hot day with a cheap cat that I installed temporarily for inspection.
Took it off and the problem went away.
Habitually running the tank below that can make the pump get hot and wear out prematurely, and there are cases where hard turns can result in fuel starvation and engine damage.
I had a similar experience on a hot day with a cheap cat that I installed temporarily for inspection.
Took it off and the problem went away.
Last edited by BigCajun; 09-05-2016 at 07:16 PM.
09-05-2016, 08:31 PM
#3
I've seen that you have been dealing with this for about 5 years now and you haven't even suspected the fuel system. I had this exact problem a few years back and everyone else thought differently.
Look at my posts in the fuel pump fix thread and also in my photo albums to see the fully disassembled fuel pump assembly.
My post start here and a few more after.
https://www.rx8club.com/series-i-maj...3/#post4613813
Heat is a bad thing when you have a almost clogged fuel filter. I know I drove all the way from Toronto, Canada to Orlando Florida and with out a lie as soon as I hit the heat in Orlando nothing but problems the whole two weeks I was there. I had to keep topping up at every 3/4 tanks to stop it from happening.
Save yourself all the hassle time and money you have already spent so far and just replace the whole fuel pump assembly with a brand new oem and I mean the whole thing not just fuel pump cartridge with a higher volume aftermarket one. No need for it unless your boosted.
Look at my posts in the fuel pump fix thread and also in my photo albums to see the fully disassembled fuel pump assembly.
My post start here and a few more after.
https://www.rx8club.com/series-i-maj...3/#post4613813
Heat is a bad thing when you have a almost clogged fuel filter. I know I drove all the way from Toronto, Canada to Orlando Florida and with out a lie as soon as I hit the heat in Orlando nothing but problems the whole two weeks I was there. I had to keep topping up at every 3/4 tanks to stop it from happening.
Save yourself all the hassle time and money you have already spent so far and just replace the whole fuel pump assembly with a brand new oem and I mean the whole thing not just fuel pump cartridge with a higher volume aftermarket one. No need for it unless your boosted.
Last edited by scottish; 09-06-2016 at 08:52 AM.
09-06-2016, 09:11 AM
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I've seen that you have been dealing with this for about 5 years now and you haven't even suspected the fuel system. I had this exact problem a few years back and everyone else thought differently.
Look at my posts in the fuel pump fix thread and also in my photo albums to see the fully disassembled fuel pump assembly.
My post start here and a few more after.
Fuel Pump Solution - All Failure Modes - Page 31 - RX8Club.com
Heat is a bad thing when you have a almost clogged fuel filter. I know I drove all the way from Toronto, Canada to Orlando Florida and with out a lie as soon as I hit the heat in Orlando nothing but problems the whole two weeks I was there. I had to keep topping up at every 3/4 tanks to stop it from happening.
Save yourself all the hassle time and money you have already spent so far and just replace the whole fuel pump assembly with a brand new oem and I mean the whole thing not just fuel pump cartridge with a higher volume aftermarket one. No need for it unless your boosted.
Look at my posts in the fuel pump fix thread and also in my photo albums to see the fully disassembled fuel pump assembly.
My post start here and a few more after.
Fuel Pump Solution - All Failure Modes - Page 31 - RX8Club.com
Heat is a bad thing when you have a almost clogged fuel filter. I know I drove all the way from Toronto, Canada to Orlando Florida and with out a lie as soon as I hit the heat in Orlando nothing but problems the whole two weeks I was there. I had to keep topping up at every 3/4 tanks to stop it from happening.
Save yourself all the hassle time and money you have already spent so far and just replace the whole fuel pump assembly with a brand new oem and I mean the whole thing not just fuel pump cartridge with a higher volume aftermarket one. No need for it unless your boosted.
I am convinced it is the pump because at 1/2 tank, filling it up dumps 55F gas from underground into the tank cooling the pump and that got me 1/2 way home on an hour drive. Stopped again after some engine hesitation and got another 2 gallons in and got home OK.
Yes, I don't need a high flow pump, just one that works.
09-06-2016, 11:00 AM
#5
You gonna eat that?
iTrader: (1)
Got mine from Advance, works fine.
You can get online coupons and save more $$.
You can get online coupons and save more $$.
09-06-2016, 11:41 AM
#6
Yes, 5 years. Basically figured it was the coils and just didn't drive it when it was hot out (second car). Changed the coils since that doesn't hurt anything. Talked to the dealer mechanic today and of course he is convinced it is the apex seals. I don't think so. Runs like a stuck pig when under 90F out and always starts instantly even after it bogs down.
I am convinced it is the pump because at 1/2 tank, filling it up dumps 55F gas from underground into the tank cooling the pump and that got me 1/2 way home on an hour drive. Stopped again after some engine hesitation and got another 2 gallons in and got home OK.
Yes, I don't need a high flow pump, just one that works.
I am convinced it is the pump because at 1/2 tank, filling it up dumps 55F gas from underground into the tank cooling the pump and that got me 1/2 way home on an hour drive. Stopped again after some engine hesitation and got another 2 gallons in and got home OK.
Yes, I don't need a high flow pump, just one that works.
for sure its the fuel pump assembly.
Theres so much fear mongering on this site that the first thing everyone assumes its the ignition system is the cause of all problems. The fact is a rotary is no different than a piston engine when it comes to diagnosing problems. the fundementals are exactly the same as its still a combustion engine. its basic diagnostic procedures which can be used on any type of engine. **** it should be easier to diagnose cause it has way less parts.
grab yourself a new oem fuel pump assembly and throw it in and let us know how you got on. i swear you will be kicking yourself wishing you had done it sooner.
Last edited by scottish; 09-06-2016 at 11:53 AM.
09-06-2016, 08:51 PM
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lol did he tell you your tappets need adjusting too. if this is the same mechanic you have been taking it too all this time in the past 5 years then it would be safe to say he has been leading you up the garden path.
for sure its the fuel pump assembly.
Theres so much fear mongering on this site that the first thing everyone assumes its the ignition system is the cause of all problems. The fact is a rotary is no different than a piston engine when it comes to diagnosing problems. the fundementals are exactly the same as its still a combustion engine. its basic diagnostic procedures which can be used on any type of engine. **** it should be easier to diagnose cause it has way less parts.
grab yourself a new oem fuel pump assembly and throw it in and let us know how you got on. i swear you will be kicking yourself wishing you had done it sooner.
for sure its the fuel pump assembly.
Theres so much fear mongering on this site that the first thing everyone assumes its the ignition system is the cause of all problems. The fact is a rotary is no different than a piston engine when it comes to diagnosing problems. the fundementals are exactly the same as its still a combustion engine. its basic diagnostic procedures which can be used on any type of engine. **** it should be easier to diagnose cause it has way less parts.
grab yourself a new oem fuel pump assembly and throw it in and let us know how you got on. i swear you will be kicking yourself wishing you had done it sooner.
The mechanic did say the 'rubber' in the apex seals is a problem if it isn't driven much.
Bought a new pump Assy today and will pick up a pump spanner wrench tomorrow. Tank is full so took it out for some driving tonight. 82F/27C ran like a stuck pig. Will do some more driving in the morning to lower the level
How low should I go before I can take the pump out?
09-07-2016, 03:11 AM
#8
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I am glad I changed the coils and wires. It runs stronger.
The mechanic did say the 'rubber' in the apex seals is a problem if it isn't driven much.
Bought a new pump Assy today and will pick up a pump spanner wrench tomorrow. Tank is full so took it out for some driving tonight. 82F/27C ran like a stuck pig. Will do some more driving in the morning to lower the level
How low should I go before I can take the pump out?
The mechanic did say the 'rubber' in the apex seals is a problem if it isn't driven much.
Bought a new pump Assy today and will pick up a pump spanner wrench tomorrow. Tank is full so took it out for some driving tonight. 82F/27C ran like a stuck pig. Will do some more driving in the morning to lower the level
How low should I go before I can take the pump out?
It should be at 1/4 tank max .... or u will have slight prblems with fuel Spilling out into ur car.
Greetings
09-07-2016, 08:49 AM
#9
Yup 1/4 tank is good but that will still be a lot of fuel left in the tank.
It may take you a long time to burn off the gas with your current issue.
I suggest the following this is what I did.
1, get a long hose, disconnect the fuel line off the pump and connect the long hose with a hose clamp.
2, stuff the other end of the hose into your second cars gas tank if that is low on gas.
3, key the rx8 to the on position and the pump will prime pumping the fuel into your second car.
4, repeat step 3 until tank is empty.
This way is a lot faster if you have a full tank.
It may take you a long time to burn off the gas with your current issue.
I suggest the following this is what I did.
1, get a long hose, disconnect the fuel line off the pump and connect the long hose with a hose clamp.
2, stuff the other end of the hose into your second cars gas tank if that is low on gas.
3, key the rx8 to the on position and the pump will prime pumping the fuel into your second car.
4, repeat step 3 until tank is empty.
This way is a lot faster if you have a full tank.
09-07-2016, 09:40 AM
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Yup 1/4 tank is good but that will still be a lot of fuel left in the tank.
It may take you a long time to burn off the gas with your current issue.
I suggest the following this is what I did.
1, get a long hose, disconnect the fuel line off the pump and connect the long hose with a hose clamp.
2, stuff the other end of the hose into your second cars gas tank if that is low on gas.
3, key the rx8 to the on position and the pump will prime pumping the fuel into your second car.
4, repeat step 3 until tank is empty.
This way is a lot faster if you have a full tank.
It may take you a long time to burn off the gas with your current issue.
I suggest the following this is what I did.
1, get a long hose, disconnect the fuel line off the pump and connect the long hose with a hose clamp.
2, stuff the other end of the hose into your second cars gas tank if that is low on gas.
3, key the rx8 to the on position and the pump will prime pumping the fuel into your second car.
4, repeat step 3 until tank is empty.
This way is a lot faster if you have a full tank.
Last edited by hoosier8; 09-07-2016 at 09:46 AM.
09-07-2016, 10:39 AM
#11
Even better. I Was going to suggest the jumper but didn't know your technical abilities. Lol
Yup the 1 second air is the fuel bowl/ cup emptying faster than it can fill back up because the fuel is under no pressure. Maximum flow.
Leave a few litres of fuel in there so you can start it up after you replace the pump.
Remember the assembly must be re installed with the arrow on top pointing to the front of the car.
Yup the 1 second air is the fuel bowl/ cup emptying faster than it can fill back up because the fuel is under no pressure. Maximum flow.
Leave a few litres of fuel in there so you can start it up after you replace the pump.
Remember the assembly must be re installed with the arrow on top pointing to the front of the car.
Last edited by scottish; 09-07-2016 at 10:42 AM.
09-07-2016, 04:59 PM
#12
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I replaced the pump today and I made a mistake while pulling it out and actually broke the two little wires that go into the tank in half. Stripped them twisted them together and then encased them in JB waterweld. Supposed to be impervious to gas. We shall see, if not it will be another project.
Drove it a bit then filled up to see if there were any leaks around the pump retaining ring. Everything looked good so I buttoned it up.
91F today. Last time I drove it when it was 91 I couldn't go very far and I certainly couldn't accelerate. Now it runs strong accelerates really well. First drive was with one quarter of a tank. Last time I could barely drive with half a tank and 91°.
Drove it a bit then filled up to see if there were any leaks around the pump retaining ring. Everything looked good so I buttoned it up.
91F today. Last time I drove it when it was 91 I couldn't go very far and I certainly couldn't accelerate. Now it runs strong accelerates really well. First drive was with one quarter of a tank. Last time I could barely drive with half a tank and 91°.
Last edited by hoosier8; 09-07-2016 at 05:02 PM.
09-17-2016, 03:07 PM
#14
so its been over a week now. So whats the verdict fixed?
I'm guessing its fixed. i suspect you have been out driving it all over the place in any heat making up for the five years of living with it and had no time to update us. lol
I'm guessing its fixed. i suspect you have been out driving it all over the place in any heat making up for the five years of living with it and had no time to update us. lol
Last edited by scottish; 09-17-2016 at 03:14 PM.
08-24-2017, 06:44 PM
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Two cars with 20mpg and premium on the highway was killing me. Kept the FJ Cruiser for the winter. I will miss the 8.
what I really want is another MGA. Fun car.
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