Dieseling during acceleration
#1
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Dieseling during acceleration
hey guys,
i've got an 84 Z w/ a 305 HO with about 170k miles. i've just recently started having problems with a strange dieseling sound coming around at higher rpms. it's tough to describe the sound, but it only happens up above 3000 rpms. there is a deffinate loss of power when this occurs. could this just be knocking? i've never really heard what a knock sounds like. it also seems that this problem occurs more in the morning when the engine is below 120 degrees. although it's a bit better when the engine is warmed it's still present in the upper rpms. it's also more evident in lower gears (1 & 2) are worst. that's probably due to engine working harder than in 4/5th
any help would be greatly appreciated. thanks in advance!
#2
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Car: 82 camaro SC
Engine: 350
Transmission: 700r4
Have somebody drive it that can diagnose your problem.Dieseling is when an engine continues to run without spark(after it's turned off). 4/5 puts more load on the engine than 1/2 at the same throttle position.
Just a guess would be that it's pinging. Bad gas,incorrect timing, carbon deposits are some of the causes of this.
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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro
Just a guess would be that it's pinging. Bad gas,incorrect timing, carbon deposits are some of the causes of this.
------------------
82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro
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ya, i guess dieseling was a bad choice of words. it just sounds like a diesel would during acceleration. that's just the best description i could think of for the sound since i can't make any of the goofy noises everyone loves so much.
#4
It's not pinging? Try running better gas and maybe retarding the timing back a little. I know on my '80 Camaro the HEI sometimes vibrates too much and advances a hair too much and it pings every few months.
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-80 Camaro 350, Carter AFB, headers, dual exh, ram air, all sorts of crap
-88 Iroc-Z 350tpi, 3.27 gears, 4 wheel disc, MSD 6a, tpi airfoil, k+n's, white gauges, accel coil, flowmaster, pretty quick
------------------
-80 Camaro 350, Carter AFB, headers, dual exh, ram air, all sorts of crap
-88 Iroc-Z 350tpi, 3.27 gears, 4 wheel disc, MSD 6a, tpi airfoil, k+n's, white gauges, accel coil, flowmaster, pretty quick
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