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My car (86 420SEL with 90,000 miles and FULL maintenance records) idles roughly and hesitates to pick up under low throttle. About mid throttle just off the line the power jumps in and gets the car moving. The shaking is most drastic at low or high temperatures, but around 75 degrees it is most subdued. Injector cleaner seems to help, but it is so subtle that it could be my imagination. I have replaced the the plug wires, and I am wondering if injectors are next. Or am I on the wrong track. Thanks for the help.
Nick |
Possibly you have a vacuum leak some where around the intake manifold. Has the fuel pressure been tested?? Fuel delivery (ie; injectors) can cause idle & accel. problems!
------------------ MERCEDES BENZ MASTER GUILD TECHNICIAN ASE MASTER TECHNICIAN 27 YEARS M.B. TECH |
Does the engine have the old style steele injection nozzles? Or the new brass ones? The best way to check is with a magnet. The old injetion nozzles that are made of steele gave many problems.
------------------ Benzmac: ASE CERTIFIED MASTER AUTO TECHNICIAN LEAD TECHNICIAN FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM |
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