Hot-start back firing issue:
04-10-17, 10:41 AM
#1
Hot-start back firing issue:
Hi guys,
I've noticed lately that my FD likes to backfire once during re-starting the engine.
This might be a related problem that I recently resolved about lost compression/flooded/stuck seals issue here:
https://www.rx7club.com/3rd-generati...ssion-1110714/
I'm guessing that it might be possible a fuel injector maybe leaking fuel after shutdown, and the residual pressure in the rail is causing the gas to drip into the engine... and then on start up that raw fuel gets pushed out into the turbos and POW! small backfire.
Has anyone else experienced a similar issue?
The car ran great regardless of the backfire... it's just annoying.
Just sharing!
Thanks,
I've noticed lately that my FD likes to backfire once during re-starting the engine.
This might be a related problem that I recently resolved about lost compression/flooded/stuck seals issue here:
https://www.rx7club.com/3rd-generati...ssion-1110714/
I'm guessing that it might be possible a fuel injector maybe leaking fuel after shutdown, and the residual pressure in the rail is causing the gas to drip into the engine... and then on start up that raw fuel gets pushed out into the turbos and POW! small backfire.
Has anyone else experienced a similar issue?
The car ran great regardless of the backfire... it's just annoying.
Just sharing!
Thanks,
04-10-17, 10:48 AM
#2
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Hi guys,
I've noticed lately that my FD likes to backfire once during re-starting the engine.
This might be a related problem that I recently resolved about lost compression/flooded/stuck seals issue here:
https://www.rx7club.com/3rd-generati...ssion-1110714/
I'm guessing that it might be possible a fuel injector maybe leaking fuel after shutdown, and the residual pressure in the rail is causing the gas to drip into the engine... and then on start up that raw fuel gets pushed out into the turbos and POW! small backfire.
Has anyone else experienced a similar issue?
The car ran great regardless of the backfire... it's just annoying.
Just sharing!
Thanks,
I've noticed lately that my FD likes to backfire once during re-starting the engine.
This might be a related problem that I recently resolved about lost compression/flooded/stuck seals issue here:
https://www.rx7club.com/3rd-generati...ssion-1110714/
I'm guessing that it might be possible a fuel injector maybe leaking fuel after shutdown, and the residual pressure in the rail is causing the gas to drip into the engine... and then on start up that raw fuel gets pushed out into the turbos and POW! small backfire.
Has anyone else experienced a similar issue?
The car ran great regardless of the backfire... it's just annoying.
Just sharing!
Thanks,
If I had to guess you have a leaky injector or 4
04-10-17, 03:33 PM
#4
Thanks for the replies guys.
That's what I was thinking personally.
Instead of having these cleaned, I'd prefer to get denso replacements.
Got any good sources online to purchase new injectors? (I've searched a couple sites, but figured I'd ask y'all's experience.)
Might also get an AFPR so I can make adjustments and easily fit an electronic FP gauge on it.
Thanks in advance.
That's what I was thinking personally.
Instead of having these cleaned, I'd prefer to get denso replacements.
Got any good sources online to purchase new injectors? (I've searched a couple sites, but figured I'd ask y'all's experience.)
Might also get an AFPR so I can make adjustments and easily fit an electronic FP gauge on it.
Thanks in advance.