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slow running engine @ start-up 200

posted by  Smitty on  Mon Dec 29 01:05 CST 2003
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last visit: Sat Aug 9 22:44 CST 2014
[RELATED]

Could be a whole bunch of things. Start with simple stuff first - basic tune up, like plugs, wires, cap + rotor, fuel filter - make sure all is up to snuff. Maybe it's time to clean the throttle body. Run a bottle of Techron or BG44K thru the fuel system.

I think your '85 has the K-jetronic injection, and I'm not real familiar with it. But - does the idle increase to normal, once the engine is warmed up? If so, then you need to figure out what cold enrichment/idle scheme is not working. Perhpas a coolant temp sensor has gone bad or has a bad wire. Does the engine start OK? If it's hard to start, then maybe you have fuel delivery problems like a weak pump, a bad check valve, or even a marginal fuel pump relay. Just a few general ideas to ponder.






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