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engine STILL running rough
https://www.slantsix.org/forum/viewtopic.php?t=3007		 Page 1 of 1
Author:  Larry [ Sat Dec 15, 2001 5:04 pm ]
Post subject:  engine STILL running rough
ok, i adjusted the valves today at .10 for intake and .20 for exhaust, it cleared up some of the shaking, but it is still there. any other things i should check? I checked the cap and rotor and they look good, i also checked the carb, looks good, the timing seems to be off, i was fooling with it and it showed a little improvement. what is the recommended timing? sorry for all the questions but it's got me baffled about what is making it shake and not be smooth.

ksjo923@Hotmail.com
Author:  snarl [ Sun Dec 16, 2001 2:04 pm ]
Post subject:  Re: engine STILL running rough
Quote:
: ok, i adjusted the valves today at .10 for
: intake and .20 for exhaust, it cleared up
: some of the shaking, but it is still there.
: any other things i should check? I checked
: the cap and rotor and they look good, i also
: checked the carb, looks good, the timing
: seems to be off, i was fooling with it and
: it showed a little improvement. what is the
: recommended timing? sorry for all the
: questions but it's got me baffled about what
: is making it shake and not be smooth.


Check the sparkplugs. They might be slightly fouled out and not firing correctly causeing the shaking.

snarl@net-change.com
Author:  Gary [ Sun Dec 16, 2001 3:46 pm ]
Post subject:  Re: engine STILL running rough
Larry, check the point where your PCV hose enters the manifold. I have seen the passage plugged with carbon in that area, and it will cause the engine to run rough.



lancer_41@excite.com
Author:  Larry [ Sun Dec 16, 2001 4:37 pm ]
Post subject:  Re: engine STILL running rough
Quote:
: Larry, check the point where your PCV hose
: enters the manifold. I have seen the passage
: plugged with carbon in that area, and it
: will cause the engine to run rough.


i don't have a PCV that goes into the manifold. i have one that goes to the valve cover did you mean that one?
Author:  Doctor Dodge (Doug Dutra) [ Sun Dec 16, 2001 5:15 pm ]
Post subject:  Re: engine STILL running rough
Quote:
: ok, i adjusted the valves today at .10 for
: intake and .20 for exhaust, it cleared up
: some of the shaking, but it is still there.
: any other things i should check? I checked
: the cap and rotor and they look good, i also
: checked the carb, looks good, the timing
: seems to be off, i was fooling with it and
: it showed a little improvement. what is the
: recommended timing? sorry for all the
: questions but it's got me baffled about what
: is making it shake and not be smooth.


Have you run a compression test? What are the cranking compression readings, cylinder by cylinder? Any low reading cylinders? It could be a burned valve or bad rings.
DD
Author:  Gary [ Sun Dec 16, 2001 6:31 pm ]
Post subject:  Re: engine STILL running rough
The other end of the hose goes to either the base of the carb or to a plate between the carb and the manifold. That's where it will plug. For a quick check, pull the hose off the PCV valve and see if you can blow through it.



lancer_41@excite.com
Author:  Larry [ Sun Dec 16, 2001 8:10 pm ]
Post subject:  Re: engine STILL running rough
Quote:
: Have you run a compression test? What are the
: cranking compression readings, cylinder by
: cylinder? Any low reading cylinders? It
: could be a burned valve or bad rings.
: DD


I don't have a compression tester. guess i should ask for one for Christmas!
Author:  mike [ Mon Dec 17, 2001 8:06 am ]
Post subject:  Re: engine STILL running rough
Quote:
: Check the sparkplugs. They might be slightly
: fouled out and not firing correctly causing
: the shaking.


sounds like vacuum get caps a plug up the line that goes to your vacuum booster for your brakes if it smoothes out the rubber membrane in vacuum booster unit is out. had same problem

scooterthedog@hotmail.com
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