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#1
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m104 3.0 KE-Jetronic Sometimes won't start, smoke inside intake manifold
Hi.
I have quite a big problem with my w124 m104 3.0 with ke-jetronic. Usually engine works fine, start correctly, idle are alright and everything run as it should. But.. Sometimes, when I turn off the engine and I am trying to start it again after few minutes there is some problem. Engine won't start but when I relase the key it trying to catch. If it happen there is a lot of smoke inside the ke jetronic distributor and also whole intake manifold is full of smoke. I think that there may by some problem with ignition but I don't have idea where I should start searching. I replaced CPS, distributor cap doesn't look bad, cables too. Do you have some advice? |
#2
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Quote:
Why? Because the valves were failing to close completely and leaking fuel into the inlet when the hot engine was resting. The mixture was then very rich when restarted and took a few minutes to get back to normal when statted. I also put new injector valve guides and seal in to make sure there are no vacuum leaks. RayH |
#3
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I have just replaced 6 injector for brand new, because they were leaking - as you said. But problem still didn't resolve.
I discovered another thing. If I press quickly throttle pedal to the metal, engine is starting to choking between 1-2k rpm. But if I hold rpms at high level ( more that 4k) for few second and then I press throttle quickly engine works great so maybe there is some problem with catalysts or exhaust system at all? |
#4
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What is the history of the car? Were the symptoms sudden or is this a new purchase?
Pull the cold start injector off the manifold and look for leaks from the tip ( I'm pretty sure it has one ) . Also probe the electrical connector, the cold start is only used something like sub 40*F and only while cranking. This system should have a thermo time switch controlling this action, if the cranking event occurs for too long, the cold start injector is supposed to shut off. |
#5
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I've got this car few years. Symptoms were sudden.
I will check cold start injector tomorrow because now I don't have much free time but I made simple test. I have blinded by screw fuel hose which is going to this injector and it didn't change anything so probably that is not a problem (but I will check it tommorow). Now car don't want to start at all (it's cold). When I relase the key it starting to waking up and a lot of smoke is going out of throttle body... Probably tommorow it will start without any problem... :/ |
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