Jase Posted April 27, 2014 Share Posted April 27, 2014 so my little truck likes to diesel itself , it idles smooth at 1000rpm when warm, timing was set with a light at 12deg before tdc with vac advance unplugged, vacuum sits at a steady 500mmHg at idle and drops off as it should. it runs like it should but runs on at shut down? it doesn't pink on acceleration and does smell a bit fumey could the rich mix be leaving a pool of gas in the intake? the carb does have what seems to be a fuel cut solenoid which I have checked but will double check the circuit powers down with the ignition off. it did have one blocked idle air supply jet which once fixed sorted a high idle issue it had. any thoughts? Quote Link to comment Share on other sites More sharing options...
KIRK Posted April 27, 2014 Share Posted April 27, 2014 rich mix maybe leaving carbon depositz which get hot like a glow plug / its not burning off any buildup cos too cool as well. that's what happen in planes. edit: and weedeaters/chainsaws Quote Link to comment Share on other sites More sharing options...
Jase Posted April 27, 2014 Author Share Posted April 27, 2014 seemed to have solved it, fuel cut solenoid or idle up solenoid was still getting power after ignition off, unplugged that and went for a ten minute drive along with a quarter turn out on the mixture screw and its gravy. cheers chap bloody butchered together ford Quote Link to comment Share on other sites More sharing options...
BlownCorona Posted April 28, 2014 Share Posted April 28, 2014 how did the engine start with the fuel cut solenoid unplugged??? that should have blocked off fuel all together i would have thought? Quote Link to comment Share on other sites More sharing options...
Hemi Posted April 28, 2014 Share Posted April 28, 2014 Might be a normally open valve that's only closed on shut down. Otherwise would need to be energized the whole time running. Quote Link to comment Share on other sites More sharing options...
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