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. |
Twystd1 |
Jan 26 2007, 01:31 AM
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#2
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You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
YUP...
You just clarified what Andy, LowGT, John and myself have suggested. Your carbs B dripping the "Slits Drip"... You need to rebuild em. Or have them done professionally. Depends on how much bucks you have. If'n you have bank. You send em to Art Thraen at ACE. If you have have short dollars. You bust out the manual and buy the rebuild kits and do it yourself. ALSO: Anything that is making extra heat into your engine compartment needs to be FIXED. I see some guys with the heater tube openings in the engine sheet metal exposed (open). This allows heat to come up into the engine compartment creating lost performance, engine over heating and carbs burrbling fuel. Just like yours......... So if thats an issue... FIX IT....... OK... "Where is the venturi?" was your question..... If'n you pull off your air cleaner on one side. You will see 2 holes that the air flows down into the intake manifold. (And takes fuel with it) As you look down inside of the carbs. you will see 2 venturis. These look like aluminum rocket nozzles in effect. These help straighten out the air flow. AND they dictate the size of the opening of the carb. As these can be bought in different sizes. These are UNDERNEATH the air cleaner base plate... Not above. (Above the air cleaner base are called velocity stacks) GO TO the CB PERFORMANCE or the REDLINE Carbsweb site's and look up the Web 40s details. You will see what I am talking about... or by the time I finish writing this Aaron will already have posted a pic of said venturis They hav e schematics for you to look at . What else ya need sir??? C |
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