about compression

Asked by Apr 16, 2017 at 09:37 AM about the 1989 Dodge Ram

Question type: Maintenance & Repair

i bought a 5.9 at a salvage yard and found out it has compression on only one
cylinder what can i do

2 Answers

60,875

Uhhh, take it back.

1 of 1 people found this helpful.
75,685

It's jumped timing. Hopefully they take returns. Or if it's not an interference engine you can replace the timing chain and sprockets. You'll have to set the valve timing as part of the repair. With the engine out of the vehicle it shouldn't be too difficult of a job. But before putting any money in it find out if it's an interference engine. On the other hand if this motor has been sitting for many years the valves could be stuck open. That'll mean a top end (at least) rebuild and not worth it. Remove the timing chain cover first and see what's going on. HTH. -Jim

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