yet another start up question
Thread Starter
Instructor
Joined: Nov 2007
Posts: 185
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yet another start up question
I have been trying to get my engine to start up and stay that way. I have the fuel lines connected correctly and connected to the carb. I put gas in the carb and it will fire up for a few seconds and then die out. I pulled the lines and some gas fell out of the feed line at the fuel pump but it looked dry at the top of the hose when I disconnected it from the hard line and no gas is coming out of the carb when I hit the gas. It just burns whats in the carb and dies. Has anybody had this problem before and how in gods name do I fix it so I can break in my new motor.
Drifting
Joined: Jul 2004
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From: Kissimmee fl
Finalist 2021 C3 of the Year - Modified
2017 C3 of Year Finalist
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St. Jude Donor '07
Assuming this is a rebuilt motor, did the fuel pump rod longer bolt, used to hold it in place during pump install, get removed and replaced with the shorter bolt? This will prevent the pump from working if it is tight enough.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
If it starts and runs, then we know the timing is in the ballpark and the carb is basically working - so I'd agree that the fuel pump pushrod would be the first check.
Thread Starter
Instructor
Joined: Nov 2007
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I didn't use a longer bolt to install it. the engine was out of the car when I did it so it wasnt too bad to get everything together. I guess I can pull it off and check it and reinstall it. can the fuel pump be bad enough that it wll no longer pump gas? It worked when I took it off of the car.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
got gas?
If you have not tried this,why pull the pump......... just remove the line to the carb and insert a bottle over it.....crank the engine and watch the fuel pump flow....... if there is any you should know right away which way to proceed........
If you have not tried this,why pull the pump......... just remove the line to the carb and insert a bottle over it.....crank the engine and watch the fuel pump flow....... if there is any you should know right away which way to proceed........
Drifting
Joined: Jul 2004
Posts: 1,695
Likes: 65
From: Kissimmee fl
Finalist 2021 C3 of the Year - Modified
2017 C3 of Year Finalist
Cruise-In VIII Veteran
St. Jude Donor '07
Also check the rubber hose from the frame rail to the pump. There is a special molded S hose for that connection. If you try to use a regular hose here, sometimes it will collapse and prevent the fuel from getting to the pump.
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Drifting
Joined: Aug 2005
Posts: 1,682
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From: League City TX
Pull the fuel line off of the pump inlet. Does anything run out?
If you have a good supply of fuel there you have a pump problem.
If nothing runs out there is likely a blockage upstream back towards the tank.
If you have a good supply of fuel there you have a pump problem.
If nothing runs out there is likely a blockage upstream back towards the tank.
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Thread Starter
Instructor
Joined: Nov 2007
Posts: 185
Likes: 0
I had a little come out when I pulled the feed line. it was far from a good supply. I thought it was just some that trickled down from the carb or something when I was pouring the gas in. There was no gas at the top of the line when I pulled it off the feed hard line. I will try pulling the pump off and redoing it this weekend. If you guys have any more tips it would be appreciated. What hole do I put the long bolt in to hold the pumping ron in place during install?
Melting Slicks
Joined: May 2005
Posts: 2,486
Likes: 71
From: Elkhart Lake, Wisconsin
I had a little come out when I pulled the feed line. it was far from a good supply. I thought it was just some that trickled down from the carb or something when I was pouring the gas in. There was no gas at the top of the line when I pulled it off the feed hard line. I will try pulling the pump off and redoing it this weekend. If you guys have any more tips it would be appreciated. What hole do I put the long bolt in to hold the pumping ron in place during install?