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Old 11-27-2017, 11:06 AM   #1
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ON 06 rx8 no start

i have been having an issue with my rx8 not nstarting after parking it for winter....3rd year in a row now https://www.rx8club.com/images/smilies/banghead.gif so far ive tested the fuel pump voltage and pulled the plugs and fuel pump fuse and cranked, then reinstalled and still wouldnt start. battery has 12v, fuel pump has 11v and coils only have about 3k km on them plugs have about 7k km. used an inline spark tester and showed spark at all 4 plugs my only other attempt was going to be to replace the plugs and try again. If i still cant get it going that basically just leaves compression and im prepared for that but i don't have alot of space for a rebuild. Does anyone have a renesis13b for sale in Ontario with a recent compression test?? if If i have no comp i wanna be able to swap the motors and rebuild my stock one a bit later. I just want my 8 to run for next year.


this is what its doing

thanks everybody!
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Old 11-27-2017, 12:19 PM   #2
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Have you checked you actually have fuel pressure? Is there fuel on the plugs (as in, flooding)?
If you've had no other symptoms of low compression when it did run, I wouldn't jump to that conclusion. A rebuild is a lot of work to find out the engine wasn't the problem
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Old 11-27-2017, 01:06 PM   #3
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Originally Posted by Loki View Post
Have you checked you actually have fuel pressure? Is there fuel on the plugs (as in, flooding)?
If you've had no other symptoms of low compression when it did run, I wouldn't jump to that conclusion. A rebuild is a lot of work to find out the engine wasn't the problem
i have not checked the fuel pressure, where is the schrader valve to connect the gauge on the 8? The pluds were quite saturated when i pulled them and i flicked fuel out of them when i took them out so i brake cleaned themand let them dry for a night. Ive had the car die on me at a light a couple times before so i changed the cat believing it was clogged and changed both 02 sensors before that (i got codes for them) I never got the opportunity to comp test it so im not sure if i had low compression before but i feel like its likely i did.
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Old 11-28-2017, 10:30 PM   #4
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Have you tried the deflood procedure? Pull fuel pump fuse and try to start car with accelerator depressed. after a couple attempts like that for 5 seconds. Then try it again and slowly lift accelerator. Hopefully the RPM pick up as of car is trying to start. Then put fuse back in and try starting the car.
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Old 11-28-2017, 10:32 PM   #5
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I’ve tried that without the accelerator part...I’ll give it a go tomorrow while pushing the accelerator and see if it helps, I’m most likely buying new spark plugs this weekend because this motor has flooded multiple times on these plugs I think they’re over saturated
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Old 11-29-2017, 11:39 AM   #6
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The reason to use accelerator is that it stops fuel injection while depressed. Gives a chance for any fuel in engine to be removed. And yes new plugs with yours being saturated.
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Old 12-06-2017, 07:20 PM   #7
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I want to do a fuel pressure test where is the schrader valve located for the fuel pressure gauge?
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Old 12-08-2017, 11:48 AM   #8
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You say your plugs are saturated with fuel so fuel pressure is not the problem but all that fuel is causing low compression and hard starting.
You need to deflood the engine, put some oil in the plug holes to increase compression, and then try starting with the throttle pedal position alternating between all the way down and all the way up.

All the way down will cut the fuel (deflood) all the way up turns fuel on.
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Old 12-08-2017, 12:25 PM   #9
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Thank you, I'm gunna try that hopefully this week after I get new plugs and see if I can get it to start
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