'Spark blowout', Fouled plugs?
Nov 17, 2013, 01:41 AM
#1
'Spark blowout', Fouled plugs?
I've ran into this problem where I find myself changing my spark plugs about every week due to bad backfiring under boost. Every time I change my plugs the backfiring goes away so I'm fairly certain something is causing my plugs to go bad prematurely. I'm using BPR8ES but after reading I might switch to the BR8ES. Mods are in sig, running 36psi and E85. Anyone else have and fixed this problem?
Nov 17, 2013, 02:01 PM
#4
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If you aren't gapping them then that's probably the issue, they're pretty open out of the box. Among other things the colder plugs don't clean themselves off very well which makes them foul out more easily so you'll be replacing them a lot either way. If you trounce the car every time you get in it you can blow through a set of them really fast too.
Nov 17, 2013, 02:12 PM
#5
If you aren't gapping them then that's probably the issue, they're pretty open out of the box. Among other things the colder plugs don't clean themselves off very well which makes them foul out more easily so you'll be replacing them a lot either way. If you trounce the car every time you get in it you can blow through a set of them really fast too.
A 7 is one step hotter then an 8 in the NGK line.
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Nov 17, 2013, 04:15 PM
#8
When I took my old plugs out they were obviously not gaped. I gaped the new ones to .022. The car still feels like I'm driving in a mechanical bull. I don't know what fuel cut or boost cut feel like but I imagine that is what my car is doing and the popping/backfire is still present.
After owning this car for 5 years I feel like pushing if off a cliff sometimes.
After owning this car for 5 years I feel like pushing if off a cliff sometimes.
Nov 25, 2013, 05:33 PM
#12
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I've run into the same issue lately. Gone through three sets of plugs, was tuned with BR8EIX's changed those out when car would want to stall out and traced down a bunch of issues then had tune adjust and fixed stalling issue. Brand new plugs would last maybe a week and last set lasted a day. Currently have some autozone NGK IGR7A-G's in and car ran decently. Waiting to take car back in to have fuel trims adjusted since it runs rich from idle til boost.
Don
