need some advise on weber 32/36 DFEV Anti diesel solenoid

[Andy 2]

Out of curiosity what are you using for a fuel pump? The factory pump puts out too much pressure for the Weber and will over power the float creating a rich mixture that could result in dieseling when you shut the ignition off. If you're using the factory stock mechanical pump that the Mikuni used you need a fuel pressure regulator that will reduce your fuel pressure down to 3 psi. The pump runs at 8 psi I believe. That being said,you also need to connect the fuel return from the pump to the fuel return line to the fuel tank or the pump will not last long. I have the same Weber on my '88 and have no dieseling issues.

[jamesw]

Out of curiosity what are you using for a fuel pump? The factory pump puts out too much pressure for the Weber and will over power the float creating a rich mixture that could result in dieseling when you shut the ignition off. If you're using the factory stock mechanical pump that the Mikuni used you need a fuel pressure regulator that will reduce your fuel pressure down to 3 psi. The pump runs at 8 psi I believe. That being said,you also need to connect the fuel return from the pump to the fuel return line to the fuel tank or the pump will not last long. I have the same Weber on my '88 and have no dieseling issues.

factory pump with a fuel pressure regulator2.jpg the problem with that is i put a gauge on the line going to the carb and could not get a reading @ all so i thought maybe the the gauge was bad so i bought another one regulator with gauge 3.jpgcould not get a reading with that one either. now i hooked theses in the line that goes to the carb (after the pump before the carb) so it should have read something right? but i get nothing no reading on either gauge so i took them out and am now just running the fuel pressure regulator2.jpg

[85Ram50]

factory pump with a fuel pressure regulator2.jpg the problem with that is i put a gauge on the line going to the carb and could not get a reading @ all so i thought maybe the the gauge was bad so i bought another one regulator with gauge 3.jpgcould not get a reading with that one either. now i hooked theses in the line that goes to the carb (after the pump before the carb) so it should have read something right? but i get nothing no reading on either gauge so i took them out and am now just running the fuel pressure regulator2.jpg

The regulator you show comes preset at 3psi. That is very low and you'd have to have a very good (expensive) gauge to get a good reading on that low a pressure. 3psi is also the correct pressure you want for a Weber carb.

[jamesw]

i,ll take some pics tomorrow and show what i got going on.
maybe someone can see what is wrong if anything and explain what to do.

[cerealwars]

Dude! I just ran through the exact same situation with my 88 G63B.

I bought that exact same holley regulator and a harbor freight 0-10 psi gauge. Couldn't get a reading, was frustrated, truck ran like garbage, already tried re-jetting. Finally decided to listen to everyone's advice on here and put an electric pump on my truck. Turns out I wasn't getting a reading because my mechanical pump was putting out 0.5 psi at best. I have a shortbed regular cab 2wd which makes mounting a fuel pump near the tank somewhat difficult, it's real tight back there.

I used an Airtex E8016S. I know Airtex doesn't have the best rep but I had it laying around from a different build. It was something like $25 from rockauto, I looked it up for a first gen RX-7 that uses an inline pump, it puts out about 4-5 psi. Best of all, it's tiny and has a pre-filter threaded right into it. Don't forget to hook up a relay. Echlin part no. AR272 (standard five-pin relay, fifth/middle pin goes unused) works perfect.

Truck runs much better now at idle and on the primary jet. Could hardly get into the secondary range (>3000) before. I really think the mechanical pumps are garbage for anything but the stock carb (which also happens to be garbage lol).