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joe padberg (Joemc7ab)
Registered Member
Username: Joemc7ab

Post Number: 307
Registered: 6-2004
Posted From: 66.38.159.33

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Posted on Monday, November 24, 2008 - 12:21 am:   

I very recently acquired a couple of 1990 Prevost XL's equipped with 6V92's and 6 speeds. That will have to be the subject of another post!!!!!
Both were non runners supposedly, but I got one running and it suffers from detonation.
Da Book suggests a couple of causes:
(a) oil picked in the air stream
(b) low coolant temperature (not likely,since it does it with the temperature at 170*F
(c) Faulty injectors.

Which in the humble opinion of our Detroit experts would be the likely source?
I have not yet removed the turbo etc. to have a look inside the blower if oil is bypassing the seal.


Awaiting your opinions,

Joe.
Dan West (Utahclaimjumper)
Registered Member
Username: Utahclaimjumper

Post Number: 130
Registered: 1-2005
Posted From: 208.66.38.60

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Posted on Monday, November 24, 2008 - 8:43 am:   

Joe, its supposed to detonate, thats what diesels do!!!!>>>Dan
Grant Thiessen (Busshawg)
Registered Member
Username: Busshawg

Post Number: 67
Registered: 10-2007
Posted From: 206.45.93.160


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Posted on Monday, November 24, 2008 - 10:26 am:   

I'm no expert but have had this issue that was caused by a faulty injector.

Have fun
marvin pack (Gomer)
Registered Member
Username: Gomer

Post Number: 344
Registered: 3-2007
Posted From: 71.55.230.210

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Posted on Monday, November 24, 2008 - 9:07 pm:   

Check the color of the smoke coming out the exhaust. Chanches are: at idle if you have faulty injector or injectors, first it will burn the eyes,white smoke, will kinda puff at you. I had one that had white smoke and when you mashed the gas it would spit black and white. Gray smoke is oil not fuel tho. Just a thought

Gomer

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