need help for a d4 7j

clogs
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17 years 1 month ago #9794 by clogs

need help for a d4 7j was created by clogs

we have a d4 7j it is blowing hard out of the oil filler cap
1 is it piston rings 2is it stuck valve or valves;
can anybody post parts list d47j2780w pony moter

many thanks clogs

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SJ
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17 years 1 month ago #9795 by SJ

Replied by SJ on topic Blow By

Sounds like the rings & probably the liners too are worn causing your problem with blowby by letting compression getting by the rings & going into the oil pan.If it was a valve you,d hear a miss (noise) in the exhaust & probably wouldn,t be running smoothly and have a miss.

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ccjersey
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17 years 1 month ago #9796 by ccjersey

Replied by ccjersey on topic need help for a d4 7j

Which parts of the pony motor do you need to see? The whole thing would take quite a bit of space.

Is the engine with the blowby the main or the pony motor?

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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gemdozer
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17 years 1 month ago #9799 by gemdozer

Replied by gemdozer on topic poney parts

I am still have some poney parts.

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clogs
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17 years 1 month ago #9809 by clogs

Replied by clogs on topic d47j

its the pony moter ;parts list pony only

many thanks clogs

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need help for a d4 7j

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