Car won't start after warmed up |
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Car won't start after warmed up |
Hammy |
Jan 25 2007, 06:08 PM
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#1
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
This is continued from the NARP board a while back. I'm still having the problem so I'm posting here
This is a carbed (dual Weber) 1.7 It happens like this: I drive the car around town, gets up to full temp, stop at a store to go in real quick, come back out a couple minutes later and turn her over... Crank, crank, crank, crank. Doesn't fire up This happens sometimes, and then sometimes it doesn't happen, just fires right up. (IMG:style_emoticons/default/confused24.gif) Also, the car starts fine and easily when the engine is cold. I can't tell if it's fuel related. I don't know if it's getting too much fuel when trying to start? I usually turn the engine over, and step the pedal down half way and it fires up. When this no start problem happens, no matter what I do with the gas pedal it doesn't fire. Sometimes I can get it to fire by holding the pedal down all the way and cranking forever and it'll start and run at like 100rpm, really slow like a tractor. I usually try and lightly tap the pedal to get it going strong, sometimes that'll work and sometimes it'll die. Then I can't tell if it's not getting enough fuel when trying to start - Because If I turn the engine over and don't touch the gas at all, it won't start. I normally have to push the gas down half way for a normal start. Or is it ignition related? Could incorrect timing cause it to do this? Dying battery? Engine seems to turn over fine. I have 12.4 volts across the battery posts with the engine off. Or Vapor lock? My fuel pump is just below the hell hole. Also, I've checked for any pinched fuel hose/lines and can't find any. I wouldn't think it was that because once the engine gets started again, it runs perfectly fine. I'm just scared to turn it off. Any help MUCH appreciated. This is killing me. |
Hammy |
Jan 26 2007, 04:25 AM
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#2
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
Thanks Royce. didn't remember you rebuilt the carbs yourself. That's good news. I think.
I've read a little bit through the Haynes weber manual and also have the Tomlison tech manual. Clayton, I've got the stock gaskets. Got em from PP. Carbs weren't in the mail. I did have them off the engine for quite a few months though. Only holes I can think of in the tin right now is just the stock CHT hole. Been meaning to plug it up but not sure with what. I also have the pass. side j tube completely uncapped. Driver's side is capped. Not sure what to cap off the passenger side with. I think I've read using a spray paint cap or something? Anyways, that uncapped J tube is probably DUMPING hot exhaust air right on or near the pass. carb. As for anything else I can think is wrong, remember my other thread from a little while back? About how the passenger side carb butterflies aren't closing fully for some reason. Mech. adjusted them as best as possible but still couldn't get them to close fully. So the engine will idle at 1200-1400 from time to time. But it was fine when I first got the engine and carbs from Royce. Idled right in at 800. In fact the engine fired right up with little effort first or second try after install. It was something I did when messing with stuff. Maybe I bent the throttle shaft or something? It's also hesitant under 2500, then it takes off and pulls strong. That ^ and I think the timing is off a bit cause it runs a little warmer than I'd like. |
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