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Discussion Starter #1
hey guys,
bought a 1981 280se the other week..
hadn't been started in a while.. so the problems i've had so far are
-After it started it revved up to 5-6k revs.. and stayed there..
-Fuel pump wire insulation had burnt and wasn't working, so rewired, and put a switch on the dash..

can anyone please shed some light on why its revving so damn high on startup?

cheers jake
 

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hey guys,
bought a 1981 280se the other week..
hadn't been started in a while.. so the problems i've had so far are
-After it started it revved up to 5-6k revs.. and stayed there..
-Fuel pump wire insulation had burnt and wasn't working, so rewired, and put a switch on the dash..

can anyone please shed some light on why its revving so damn high on startup?

cheers jake
If the engine revs that high, it means a large volume of air is getting in - and more importantly, the car is adding the fuel for it. Is your throttle stuck open?

How long does it stay at 5-6k? And more importantly, how long are you letting it stay there!? High revs on a cold engine is a great way to do massive mechanical damage to all the components in an engine.
 

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Discussion Starter #3
the throttle is closed, when i take a peek through that vacuum plate..
i resealed the gasket between the injector pump and throttle plate just incase it was that.. i also couldnt find any major leaks anywhere
is there any common spots i should be looking around?
 

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the throttle is closed, when i take a peek through that vacuum plate..
i resealed the gasket between the injector pump and throttle plate just incase it was that.. i also couldnt find any major leaks anywhere
is there any common spots i should be looking around?
Well, my knowledge runs out here. If the throttle isn't stuck open, then I have no idea. Something is drawing air in, and the engine is metering out fuel for it.
 

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Discussion Starter #6
it was the throttle plate! it was open a tad, so i re-adjusted the little thread type linkage.. and its shut..
now just gotta find a way to fix the metal injector lines haha :S
 

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it was the throttle plate! it was open a tad, so i re-adjusted the little thread type linkage.. and its shut..
now just gotta find a way to fix the metal injector lines haha :S
Huzzah!
 
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