Quote:
Originally Posted by tbomachines
Put 2 hose clamps on the end of the rubber hose that connects to the IACV. I'll eventually replace the hose itself but it looks like it goes down behind the fuel distributor which is not particularly encouraging me to do the job. I took the car for a long ride this evening and it ran perfectly which OTOH IS encouraging.
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Was this the final fix?
I'm working on a 91 300SL M103 24 valve that has similar symptoms and am looking for engine specific information not general "how to fix the problem" information.
The car was sitting for 3 years just prior to me buying it and I drove it onto the trailer without issue. ( The car was parked due to slipping reverse. ) The motor / trans are coming out and be replaced with a M104 / 722.6 conversion so I'm not interested in spending much time / $ but I'd like it to run better so it can be sold off as mechanically the motor is great.
Most of the time it has a clockwork smooth idle then sometimes slight roughness, put it in gear and the motor is still smooth. While still in gear, feed throttle and most times the motor will shake / ping very heavily to the point that the car barely moves. Overall the condition is getting worse sometimes affecting idle.
The old fuel has been run out and about 3 gallons of fresh burned off. I've run cars with old fuel before and none were this rough or intermittent. The dist cap / insulator dish had some carbon tracking that has been cleaned, plugs were carboned up and have been cleaned. Past that I have not done much.
Any ideas? Thanks