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Does #1 plug fire? Can you hear the injector clicking (use a long bar held to your ear) like the other injectors. Check fuel pressure, check compression...

My truck ran perfectly but had a #4 misfire code with MIL light on. I decided to park it and fix it since the light began flashing, meaning possible catalytic damage could occur if continue.

I changed a bad vacuum tube under BPT, cleaned a clogged EGR valve to BPT tube, replaced EGR, and most importantly cleaned 1/4" EGR ports in the intake manifold through the 6 Allen key plugs on the manifold. Two 10mm and four 8mm. - Thanks to a Nissan parts guy for the port info.

p.s. use a good quality Allen key socket and a 1/2 breaker bar. daas-in-der-tight!

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โˆ™ 2011-09-13 22:55:22
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Q: What could be causing 96 Nissan truck 2.4L to have a misfire on cylinder 1 you have checked the wires and replace the plugs also you have replaceed the distributor and have checked the fuel and emisso?
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