jonflies
09-01-2005, 11:31
My previous post "unable to set timing" was back in February. Advancing the timing after a rebuilt IP, timing set, etc, fixed the problem then.
Some weeks ago, I decided to replumb the fuel inlet lines back to the intent of the factory. (When I purchased the truck I thought I was doing myself a favor by moving both filters to the firewall. At that time a moved fuel lines and had both filters downstream of the pump, instead of the primary being upstream and the secondary being downstream.) The truck was running fine, but I was afraid that I was not receiving the designed water-removing efficiency from the primary by pushing fuel through it, instead of pulling fuel through it.
I moved the primary to the frame rail, near a section of rubber hose in the line (I think this might have been a factory "splice" point, in case the truck was meant to have saddle tanks. There is one large area on each side of the truck, which looks to be just large enough for the saddle tanks.) I left the secondary on the firewall.
The truck ran fine around town but stalled on trips longer than 20-miles. I had to let it cool down a bit, it would crank right up and I could drive ten more miles and repeat the process. (you should have seen my wife's face)
I read plenty of posts and have done the following; 1)added another lift pump in series, closer to the primary, thinking there was too much distance between the filter and the pump. 2) Changed both filters again, just in case. I could not see any noticable gunk in the old filters. 3) Put a clear plastic line on the return of the pump. NO bubbles, but I did notice that the fuel gets sucked back into the pump after shutdown. 4.) changed portions of the rubber fuel hose with special Gates-injection-hose-for-diesel-service type. Also changed a few fittings just in case they were worn and allowing air into the system.
The truck would start and then would barely idle. I could have my foot to the floor, but it would be only a few hundred RPM above idle, then eventually stall. I repeated this process several times.
Today I started it cold, ran it for five minutes, got it to idle, then bled the injectors. I couldn't find one that made a big difference. I drove it down the street but it wouldn't get out if its own way.
Read more posts and tried the clear tubing. When I pulled the original tubing off, I noticed a sucking sound, which probably corresponds to the sight of the fuel going back to the IP after shutdown, or the money flowing from my wallet to this piece of junk.
It started right up and idled halfway decent, but would not give power. Had noticeable white smoke too.
Some weeks ago, I decided to replumb the fuel inlet lines back to the intent of the factory. (When I purchased the truck I thought I was doing myself a favor by moving both filters to the firewall. At that time a moved fuel lines and had both filters downstream of the pump, instead of the primary being upstream and the secondary being downstream.) The truck was running fine, but I was afraid that I was not receiving the designed water-removing efficiency from the primary by pushing fuel through it, instead of pulling fuel through it.
I moved the primary to the frame rail, near a section of rubber hose in the line (I think this might have been a factory "splice" point, in case the truck was meant to have saddle tanks. There is one large area on each side of the truck, which looks to be just large enough for the saddle tanks.) I left the secondary on the firewall.
The truck ran fine around town but stalled on trips longer than 20-miles. I had to let it cool down a bit, it would crank right up and I could drive ten more miles and repeat the process. (you should have seen my wife's face)
I read plenty of posts and have done the following; 1)added another lift pump in series, closer to the primary, thinking there was too much distance between the filter and the pump. 2) Changed both filters again, just in case. I could not see any noticable gunk in the old filters. 3) Put a clear plastic line on the return of the pump. NO bubbles, but I did notice that the fuel gets sucked back into the pump after shutdown. 4.) changed portions of the rubber fuel hose with special Gates-injection-hose-for-diesel-service type. Also changed a few fittings just in case they were worn and allowing air into the system.
The truck would start and then would barely idle. I could have my foot to the floor, but it would be only a few hundred RPM above idle, then eventually stall. I repeated this process several times.
Today I started it cold, ran it for five minutes, got it to idle, then bled the injectors. I couldn't find one that made a big difference. I drove it down the street but it wouldn't get out if its own way.
Read more posts and tried the clear tubing. When I pulled the original tubing off, I noticed a sucking sound, which probably corresponds to the sight of the fuel going back to the IP after shutdown, or the money flowing from my wallet to this piece of junk.
It started right up and idled halfway decent, but would not give power. Had noticeable white smoke too.