Intake backfire?
#1
Intake backfire?
After the car has been sitting outside in the heat all day, I get in and turn the key to "on" I get an intake backfire. Doesn't really harm anything, just pops the boost gauge line off of it's vacuum tee and I have to put it back on. It was mentioned to me by someone here that a leaky injector could cause it to do that? I just want to make sure it's not something with the MS.
#2
Boost Czar
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It has to do with how the megasquirt handles the coils. Look for joe's "a better spark output" thread, he explains it well.
basically, your coils let out a spark when you went to key on and you ignited some unburnt gas that was still in the cylinders.
basically, your coils let out a spark when you went to key on and you ignited some unburnt gas that was still in the cylinders.
#9
Lots of people never have. Seems most commonly its happening to those of us running RX7 550s. I want to figure out what the problem is before changing my spark out mod. The new mod will get rid of the pop, but if i'm still leaking fuel into the cyls. I wanna know as its still going to be fouling plugs now and then.
#13
Elite Member
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True dat. I have RX7 500's and whilst I wasn't exactly plagued by the issue, it certainly reared it's head at least once a week. made the car a bitch to start and idle until the superheated air had been run through the system.
Joe's output mod solved it. (I'm sure if my tune was 100% rather than it#s ever present 90% it'd have been an even rarer occourance).
Joe's output mod solved it. (I'm sure if my tune was 100% rather than it#s ever present 90% it'd have been an even rarer occourance).
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