4K Running Like A Dog

[ke7o]

Hey I'm new to these corollas, and I have a 4kc in my ke70 and it's running like a dog the second last cyl is not firing, ive changed the plug and the lead and it's still not firing but it's sparking, I can pull the lead off and it will run the same at idle and revs! Is it a sticky valve or what's the problem

[Evan G]

4k Running Like A Dog

 

http://www.youtube.com/watch?v=OZG9BEgyCv8

 

:lolcry:

 

back on track, done a compression test yet?

[ke7o]

nahh i havnt, done a compression test, could the rings be fryed? or would it be the head?

[Evan G]

hard to say mate, do a compression test before anything. could be valve/hg related or could be something simple like a coil/points/dissy cap

[altezzaclub]

If it is just that one cylinder and everything else is running fine, then it will be a valve problem. Burnt valve or ruined seat, either way its head off time, or if you're unbelievably lucky a tappet has closed up..

 

Do a compression test before you do anything else, the readings on the other cyls will tell you how good the rings are. It may be time for new rings too.

[Mezz///]

It may also just be that one of your points of contact (inside the distributer) is badly worn,broken,or bent etc..check that also before taking head off maybe?

Just a last measure of eliminating any little probes before you get into taking the head off.

But if not,..then I'm going with Altezzas advice.Mezz

[Trev]

Another guy on here had the same issue, turned out to be a lead (too much resistance when trying to ignite compression), I recommend to swap 2 leads around and see if the issue stays on number 3 or moves.