Hot Start Fix
#1
Hot Start Fix
Has anyone used Mazdas new plugs for a hot start remedy yet? I order a pair. They are supposedly much hotter plugs to insert in the Lead plug spot. Wondering if anyone has tried them yet, I just came across them. Hadn't seen them before.
#3
FULLY SEMI AUTOMATIC
iTrader: (9)
wut?
#6
These plugs which Mazda made to remedy hot starts do not make much of a difference. I purchased a pair (you buy them in a set of 2 for the lead position) a long time ago and they made no more difference then having fresh plugs (well, and that they were more expensive too). I want to say the plug part number was the 1 ending with a 9.
Regardless, I saw no big improvement and swapped them out when winter came with fresh plugs and saw no starting performance drop. But maybe if your engine is healthier than mine it will make a bigger difference; Not sure.
Regardless, I saw no big improvement and swapped them out when winter came with fresh plugs and saw no starting performance drop. But maybe if your engine is healthier than mine it will make a bigger difference; Not sure.
#7
He said "hot start" issues are more likely to be indicative of spark plug/wire, starter motor or battery issues than anything else, in that order.
(I can see the spark plug/wire and starter motor logic, but the battery suggestion throws me for a loop).
I'm not claiming he's correct or incorrect, but the guy knows more about rotaries than anyone else I know or that I've met.
#8
Car Dude
Join Date: Nov 2011
Location: Portland, Texas
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Well, if I may ask, if you've made up your mind why are you asking? You obviously have decided he's correct because you've dismissed the replies you're getting here.
I'd say buy the plugs then let is know how you're hot start problems were cured! All the people that have had to get remanned rotaries here will love to hear it.
I'd say buy the plugs then let is know how you're hot start problems were cured! All the people that have had to get remanned rotaries here will love to hear it.
#9
Well, if I may ask, if you've made up your mind why are you asking? You obviously have decided he's correct because you've dismissed the replies you're getting here.
I'd say buy the plugs then let is know how you're hot start problems were cured! All the people that have had to get remanned rotaries here will love to hear it.
I'd say buy the plugs then let is know how you're hot start problems were cured! All the people that have had to get remanned rotaries here will love to hear it.
I was merely reporting what he had told me.
FWIW, my 8 would take longer to turn over when warm/hot for the first 2 1/2 years, and when Mazda replaced the starter motor and battery (from a Panasonic to an Interstate) under a TSB free of charge, the problem went away.
Again, I'm not saying this couldn't have been coincidence, but it would have been an odd coincidence.
#10
Hot Start Plugs
Well, it appears that it really did not help the problem. Just so everyone knows. It did runs a little better because the old plugs needed changing, but still have hot start issues.
#11
Rockie Mountain Newbie
Hot start problems are caused by weak ignition coils, feeding into leaky spark plug wires, that then fire fouled worn out spark plugs, into a combustion chamber that doesn't have enough compression, spinning at too slow of a speed.
Having a hotter grade of spark plugs helps absolutely none of those issues.
But it does allow the dealership to charge you several hundred bucks, and gets the mechanic who worked on your car an extra tank of gasoline that day.
BC.
#12
Sorry guys, and Sorry RadRed & Bruce - Bladecutter just reminded me IT WAS bad coils that were causing my hot start issue -
- the dealership replaced two of them (I think) at the time the starter motor and battery were replaced.
I had completely forgotten about that.
Before getting those replaced, the motor was misfiring at idle and having longer starts when completely warm.
- the dealership replaced two of them (I think) at the time the starter motor and battery were replaced.
I had completely forgotten about that.
Before getting those replaced, the motor was misfiring at idle and having longer starts when completely warm.
#14
Out of NYC
iTrader: (1)
the hot start plug is better for city driving because it can retain heat longer than stock 7 heat range plug. So it will less likely to foul. but you will lose maybe 1% of hp which ur butt dyno will never notice
another problem is that u can only get these plugs at mazda, ngk, for some reason dont offer them as aftermarket plugs
another problem is that u can only get these plugs at mazda, ngk, for some reason dont offer them as aftermarket plugs
#15
Just to highlight our different experiences, when my battery, coils and starter motor were replaced (the one and only time I've had any non-regular maintenance done; my 8 has been rock solid), my odometer had 68,000 fewer miles on it than now, and my motor is literally as strong as ever.
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