siroism

ok i get what your saying i was thinking the same thing maybe small amount of cam walk i don't know what the the miles are on this engine or if it was ever rebuilt so I'm would think it won't hurt to just it ill try and see if it changes what the compressor is doing thanks for your response

To fjh, thank you for your response,do you think the air compressor is causing drag on the gear train in some way, and adjusting the thrust screw will help.

to gearhead204 thank you for your response i did un pin the slave cylinder in the valley ran the engine and it still did the rough running when the compressor was filling the tanks hooked it back up took it for a ride and still the same when the compressor kicked out it ran smooth but if i held the rpm steady i could feel a little skip or rough skip but very weaker as compared to when the compressor is running but still there every few seconds or so, you think i should lean towards the pump having an issue or maybe the governor.

thanks for the replys,the foot valve is new and it did help some what i have not replaced the slave on the engine yet ,looks difficult to do,the rod and springs are all ok no binding or line problems that i have found yet there is an air leak somewhere in the truck because the air ride goes down over night as does the cab any more hints are welcome ,i'll start checking more lines and maybe attempt the slave change on the engine.

Hello hope some one can help me. I have an E9-450 in a 1994 CL600. I'm having a problem with low speed drivability. I have replaced the air cylinder on the foot pedal and checked the lines to the cylinder on the engine. All seem to be working great. Engine accelerates fine and runs fine, except at lower rpm's. I lose all smoothness and it looks like the air cylinder on the engine moves like I'm giving it fuel with a pumping motion and i noticed that when the air compressor if filling the system the same problem happens then the air dryer kicks off and it runs smooth again,any ideaswhats going on its driving me crazy and i don't want to keep throwing money at it, any info is appreciated, Thank you, Mark