1974 1.8L engine fast idle then stalls, Fuel injection issues |
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1974 1.8L engine fast idle then stalls, Fuel injection issues |
tshih914 |
Feb 19 2023, 11:45 PM
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#1
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Member Group: Members Posts: 79 Joined: 17-July 05 From: central NJ Member No.: 4,426 |
My 1.8L 914-4 with stock Bosch L?-Jetronic FI after being stored several years started to develop a hard to start problem. When finally started would stall when I give the gas pedal any input to raise the revs. I suspect there was some kind of intake air leak and while fiddling around had a backfire which blew the AF meter which I had Pelicanparts repaired. After replacing the fuel lines with the stainless ones from Tangerine Racing and flushing out the fuel system with Techron the engine started to run normally for a short time. Now the engine can be started and fast idles at 3000 rpm but again any input to rev up the engine results in stalling. The idle adjustment screw at the base of the throttle housing is fully closed. Any suggestions on how to fix?
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wonkipop |
Feb 25 2023, 08:29 PM
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#2
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Advanced Member Group: Members Posts: 4,658 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille |
@Van B .
yes i noticed that kink in the small vac line to the decel. i think he has only vac line 9 off. bridging line as you call it. and has capped off the connection points. so long as he only has that line off he is alright. attached pic of set up for vac lines to decel. but to be honest i don't think it matters which of the large lines you plug in either to side or end. the small line is opening the decel valve and letting the air through. i think it can work either way, but before i say that i better double check. (if yours is the other way around from diagram and attached photo it would tend to prove it does work either way, since your valve is operating beautifully anyway!! (IMG:style_emoticons/default/biggrin.gif) ) however most cars are rigged the way it is in the vac hose diagram. attached example. which appears to be how his is rigged. EDIT but you might be on to something there with the decel. i can't really see in to his photo clearly enough. @tshih914 , can you take a photo in close to the decel valve so we can see it really clearly. |
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