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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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88 oliver diesel

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bpitchford

02-18-2004 18:19:58




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I have a 88 diesel tractor is skipping on #1 cylinder compression is good injectors are good pump seems to work fine . Problem is when bleed injectors I get alot of air out of #1 injector and it skips on #1 I have talked to a injection repair shop and they think it is sucking air from fuel supply lines but why is it only skipping one #1 cylinder and only getting air there it is a american bocsh pump thanks for any help I can get.

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J. Schwiebert

02-18-2004 19:04:57




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 Re: 88 oliver diesel in reply to bpitchford, 02-18-2004 18:19:58  
How have you verified that compression is good,
Does it do this at any and all RPM's
Does your transfer pump work
How good are the fuel filter(s)
If you rotate the injectors, put #1 in another cylinder and put that one in number 1 will the miss stay with the cylinder or the nozzle/
Since I have space, how is pump timing/



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the best

02-19-2004 17:07:44




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 Re: Re: 88 oliver diesel in reply to J. Schwiebert, 02-18-2004 19:04:57  
your mum losers



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bpitchford

02-18-2004 19:22:49




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 Re: Re: 88 oliver diesel in reply to J. Schwiebert, 02-18-2004 19:04:57  
Yes if i move injectors around #1 still skips and gets alot of air every thing else is good but fuel lines I'am putting new lines on it tomorrow the rubber compression fittings on old lines are cracked transfer pump is also new where could air in #1 line come from if it is not fuel supply lines Filters are new Thanks if you can help



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J. Schwiebert

02-19-2004 19:26:01




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 Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-18-2004 19:22:49  
Where and how do you see all this air and have you run it with the manifold off. Have you checked all the injectors on a tester
What color smoke puff do you get when it misses? is it a steady miss Since it is a Fleetline do you have one or two fuel filters?



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J. Schwiebert

02-19-2004 15:38:20




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 Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-18-2004 19:22:49  
Have you run it with the exhaust manifold off. That pump has one plunger and it pumps fuel to all 6 cylinders so it is hard to imagine you have this air problem. How does it start, Smoke wise? Color of smoke and quanity of smoke. What are the injectors set at and how is the return leakage on them? How much compression do you have? How are the valve springs?
What are you running for transfet pump pressure? If you have transfer pressure pressure the pump will not suck air as the pressure will be trying to force the fuel out of the lines and filters. Is this a Fleetline or Super 88? What brand of final filter are you using?

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Joe

02-19-2004 06:41:03




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 Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-18-2004 19:22:49  
Puff of white smoke during the skip - likely low compresssion. Mine did this with worn valve guides and valves ground so many times the edges were sharp.

No smoke during the skip - no fuel. Hard to believe is #1 only.



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mak

02-19-2004 06:40:42




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 Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-18-2004 19:22:49  
It could be one of the previos nozzle prior to number one in the firing order could be stuck open allowing a lot the fuel to be dumped into that cylinder, and not having enough left over to supply your number one nozzle. I would look at say, number four nozzle since it fires right before #1. Had similiar problem on our 1850. Had some nozzles stuck open.



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bpitchford

02-19-2004 17:55:20




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 Re: Re: Re: Re: 88 oliver diesel in reply to mak, 02-19-2004 06:40:42  
If #4 injector is stuck would I get air out of #1 when I bleed #1 And if #4 is stuck this could be where some of my smoke is coming from and could be causing some of my skipping problem makes since !!! I have more injectors I'll try them after I run new fuel lines and install new filter base I guess I will do one thing at a time untill I find the problem I want Tractor to be right and look good with no leaks its a 1953 so most ever thing on it seeps oil or fuel problem could be anywhere thanks for anymore help you can give. I work on tractor&trailers for a living but most are not made in 1953 things are alot differant now. We have mostly JohnDeere on the farm at home never tried a OLIVER THANKS

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mak

02-20-2004 07:06:50




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 Re: Re: Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-19-2004 17:55:20  
I found it hard to believe also that a stuck injector would cause the next cylinder in the firing order appear to have only air coming out of the line. The previous cylinder prior to the one having air is likely you culprit one a nozzle stuck. Our 1850 like I said, did the same thing showing air at the cylinder after a nozzle that was stuck open. Pulled out all the nozzles and found two that were stuck open.

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Joe

02-20-2004 06:12:26




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 Re: Re: Re: Re: Re: 88 oliver diesel in reply to bpitchford, 02-19-2004 17:55:20  
Share you view on fuel leaks. Deviated abit from "original" on the return line but it stopped the leaks. Mine is a '53 also with the Super final filter kit added by PO. The T's on the nozzles get worn and nearly always cause a leak; they are low cost to replace. The rubber seals on the other lines can be made by cutting off small sections of fuel hose.

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bpitchford

02-20-2004 18:09:31




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 Re: Re: Re: Re: Re: Re: 88 oliver diesel in reply to Joe, 02-20-2004 06:12:26  
Thanks for pictures of fuel lines I think that is a good idea thats the way most all newer engines are. It also looks alot neater I think I will do the same I'm going to work on it Sat. thanks for all the help I'll keep you posted on it Thanks.



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