Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

78 C10 chevy

dcoment's Avatar
Visiting Guest

Posts: n/a

07-16-03, 04:54 PM   #1  
78 C10 chevy

I have a 1978 C10 Chevy pickup with a 250 inline 6 and a three on the tree tranny. It ticks bad and may need a lifter but it also seems to load up at high rpms and backfires or has an exhaust leak but it looses power at the higher rpms, What should I check first? it looses no oil, and no water is in the oil.

Sponsored Links
billys68ss's Avatar

Join Date: May 2003
Posts: 1,459

07-16-03, 05:29 PM   #2  
The first two things that come to mind for me is either your carburetor is loading up or you have a stopped up catalytic converter. That is where I would start.
Hope this helps,

truckdrivinfool's Avatar
Visiting Guest

Posts: n/a

07-16-03, 10:01 PM   #3  
Along with finding the culprit of the ticking I'd also check the distributor cap, rotor, points (if equipped not sure what ignition would be on a 78 I-6) and plugs then look into the carb.

fatcatdj's Avatar
Visiting Guest

Posts: n/a

07-17-03, 12:17 AM   #4  
extreme ticking, loss of RPM. sounds like this dinosaur needs a valve job. the simplicity of an old c10 6 reminds me of high school. youre lucky to drive such a pre-eletronic machine. check the compression w/ a compression meter, if the piston rings dont leak oil and compression is fine, remove the head, exhau manfld, intake manfl & carb and take it to a machine shop, get a quality valve job. buy a head gasket, intake & exhaust man gasket and reinstall making sure the timing chain (new one costs $22) is put on right along with DTC with the dist cap. (if you know how) I wish my 01 car was that simple...oh how I yearn for 1976....

Joe_F's Avatar
Visiting Guest

Posts: n/a

07-17-03, 04:02 AM   #5  
Agree with all posters. Start with the Basics.

This is a simple simon old truck. Something silly is wrong with it more than likely. Some TLC and time should straighten it out.

Search this Thread