Fuel check valve install
#1
Fuel check valve install
Well I replaced my fuel pump about a year ago with a Napa unit. About 6 months after that it started giving me a hard time starting due to it loosing the prime. The check valve that keeps fuel pressure inside the line for a fast start was failing and letting the pressure drain back into the tank. So for all this time I would crank the ignition to start 2 times before I try to start to prime up the pump. Sometimes I would flood the engine by priming it too much.
I did a good search online and there was a common fix using a BMW check valve kit. Now no longer made. Finally I found a simple but perfect check valve on Ebay. On 93-down there is an external filter where there is a small section of rubber fuel line which is 5/16. I just cut the line and installed the valve with new fuel line in between.
So far I only had it installed for 1/2 a day but normally it would drain back by then, but with this installed it started perfect every time. Easy fix!!
Here is the link. (This type of check valve may help with delayed engagement on autos due to bad or no check valve)
http://www.ebay.com/itm/5-16-Check-V...#ht_599wt_1185
Here are a few pictures.
Check valve
Check valve installed behind the fuel filter. (I just hosed off the Gas that leaked during the install, that is the wetness you can see in the photo.)
I did a good search online and there was a common fix using a BMW check valve kit. Now no longer made. Finally I found a simple but perfect check valve on Ebay. On 93-down there is an external filter where there is a small section of rubber fuel line which is 5/16. I just cut the line and installed the valve with new fuel line in between.
So far I only had it installed for 1/2 a day but normally it would drain back by then, but with this installed it started perfect every time. Easy fix!!
Here is the link. (This type of check valve may help with delayed engagement on autos due to bad or no check valve)
http://www.ebay.com/itm/5-16-Check-V...#ht_599wt_1185
Here are a few pictures.
Check valve
Check valve installed behind the fuel filter. (I just hosed off the Gas that leaked during the install, that is the wetness you can see in the photo.)
#2
#5
#9
My1989 Dakota Symptoms
Mine is a 1989 with 133,000 miles . Had to crank along time to get it to start . I finally figured out if I cycle the key 3 times until I here the pump stop running it will start right up and run well . I ordered the same check valve . My fuel filter design is a little different. It would be easier to put it ahead of the fuel filter , but mine has a short looped hose on the inlet of the fuel filter . With a 90 degree fitting I think I could put it there . I can't see if would make any difference ? I suppose the closer to the tank , the more fuel in the line. Keeping the fuel filter full would help with that effort . Makes sense .
Last edited by David Mann; 01-02-2020 at 06:00 AM.
#10
Mine is a 1989 with 133,000 miles . Had to crank along time to get it to start . I finally figured out if I cycle the key 3 times until I here the pump stop running it will start right up and run well . I ordered the same check valve . My fuel filter design is a little different. It would be easier to put it ahead of the fuel filter , but mine has a short looped hose on the inlet of the fuel filter . With a 90 degree fitting I think I could put it there . I can't see if would make any difference ?