Let's talk about fouled plugs

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Let's talk about fouled plugs

RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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03-29-2012, 08:30 PM

JustJeff

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Join Date: Mar 2008

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Let's talk about fouled plugs

It seems that my front spark plugs are fouling. I've got about 800 miles on my rebuild. It's an almost stock S5 JDM 13B rebuild. It idled great on first start up and progressively the engine got more "pooty" and less smooth like you'd expect a rotary to be. I changed my oil at 500 miles and at that time changed the plugs. Front ones were dirty, even the threads on the plugs were notably darker than the rear plugs. After changing the plugs the engine purred beautifully again. But now 300 miles later it is again "pooty". I have not pulled the plugs yet to know for sure, but educated guess is they will be.

I know fouled plugs are common during break in, is it normal 800 miles into break in? One thing I did not do for my rebuild was have my injectors tested and cleaned. Any suggestions on who to send them to? Or any other advice regarding my plugs fouling?

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Originally Posted by yzf-r1

Take your pathetic ultimatums and stupid "AOL" comments and shove them straight up your ass, you little punk. You avatar is gay as well....

1990 Vert/ S5-JDM 13BT (rebuilt but with issues I'm working out). Rtek N370 1.7, 550/800 injectors, FD fuel pump, RB REV TII exhaust, Tein springs and Illuminas

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