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#5 cylinder header glowing

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Old 03-24-2015, 06:40 PM
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Car: 1988 gta se
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#5 cylinder header glowing

Hey guys, I have a 1988 gta ,a new zz430 engine ,hsr intake 24lb hr. injectors ,msd 6al box ,it has about 1 hr. of run time why would the #5 header glow? I've switched injectors, plugs, checked valve lash, checked for vacuum leaks, checked injector pulse , set timing to 10 deg. I'm stumped !any suggestions?
Old 03-24-2015, 06:53 PM
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Car: 1984 z28
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Re: #5 cylinder header glowing

Gotta be running lean in that one cylinder. Injector or vacuum leak.
Old 03-30-2015, 01:21 PM
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Re: #5 cylinder header glowing

Possibly a bad injector?
Old 03-30-2015, 01:25 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: #5 cylinder header glowing

Inj hanging open and burning fuel in the exhaust?
Fuel psi regulator diafram ok? Not sucking fuel through the vac line?
Old 03-30-2015, 02:00 PM
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Re: #5 cylinder header glowing

Vacuum leak on that runner?
Old 03-31-2015, 05:47 PM
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Re: #5 cylinder header glowing

hey guys thank you for your suggestions, after a ton of time (money)I found out all cylinders would glow 5 was just first. so there is to much motor for hypertech chip (junk waste of 300.00)I order a custom prom will let you know how it turns out
Old 03-31-2015, 10:12 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: #5 cylinder header glowing

A stock 350 chip is better than the hypercrap..
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