Engine skip/bucking
#18
2002 ford f150 4.6l v8 cylinder 5 low on compression
Started truck on morning, service engine light came on, engine started running a little rough and missing, some power drain. 71,000 miles on engine. Changed fuel filter, didn't fix, took it to a local shop, they checked cylinder 5 based on p305, said it was low on compression, suggested rebuilding the engine. I checked it on on the web. Found identical problem that i was having and the suggestion was to change spark plugs and coil pack. Called the mechanic back, he said it wouldn't make a difference when it comes to compression. I went somewhere else, changed coil pack and spark plugs. Fixed problem. The bill went from $2,000 to $146.00.
#19
Started truck on morning, service engine light came on, engine started running a little rough and missing, some power drain. 71,000 miles on engine. Changed fuel filter, didn't fix, took it to a local shop, they checked cylinder 5 based on p305, said it was low on compression, suggested rebuilding the engine. I checked it on on the web. Found identical problem that i was having and the suggestion was to change spark plugs and coil pack. Called the mechanic back, he said it wouldn't make a difference when it comes to compression. I went somewhere else, changed coil pack and spark plugs. Fixed problem. The bill went from $2,000 to $146.00.
Well, someone was wrong
Last edited by jbrew; 06-19-2009 at 10:45 AM.
#21
#22
#23
We cross-checked with the other cylinders (even after we checked the compression on the cylinder that was "low" on compression and found out it wasn't) and everything checked out. I didn't realize each engine kind of has it's own compression "signature". Thanks.
#24
http://www.aa1car.com/library/compression.htm
Test warm if possible, - more accurate.
#25
Here's a general -
http://www.aa1car.com/library/compression.htm
Test warm if possible, - more accurate.
http://www.aa1car.com/library/compression.htm
Test warm if possible, - more accurate.
Good Job, Thanks....
#26
Hey!- it's right, even the #'s.
______________________________
Damn!!! That is a good link!! I went back
Last edited by jbrew; 06-22-2009 at 05:51 PM.
#27