motox tech
Full Access Member
I see drain now, thanks guys, I will need to reem it. Ya I dried the valley pan after wash, there was so much dirt and baby powder caked in the back I couldnt see drain.
I see it now.
pensicola pump
- Thread starter motox tech
- Start date
I see drain now, thanks guys, I will need to reem it. Ya I dried the valley pan after wash, there was so much dirt and baby powder caked in the back I couldnt see drain.
I see it now.
motox tech
Full Access Member
not that rare if pump sits on shelf for a long time and seals get dry.
motox tech
Full Access Member
turbo not in the way, just a ton of dirt, baby powder and extra washers.
gonna reem hole out to find out, shouldnt be any rtv in drain, I hope.
motox tech
Full Access Member
Can a leak from injector, on passenger side, end up in valley pan. I got one seeper, maybe its leaking more than I thought. Cant see how the fuel would drain to valley pan, but I could be wrong.
f-two-fiddy
Registered User
Well, You still have a problem if Your still getting a quart of fuel in the crankcase?
icanfixall
Official GMM hand model
Slow To Fire Off At First Start
My motor has always started on the first 1/4 to 1/2 turn no matter how cold or hot the outside temp is. I could let it sit without a start for almost 2 weeks and it would start the same way... Now I need to stay on the starter for around 5 seconds. Then it lites off. No ruff running or smoke. The glow plugs take the same amount of time till the lite goes out. No air in the filter comming out the shrader either. All I have done lately is turn down the fuel. I have the new BB injectors in it and the Moose pump is working fine... I'm just loosing fuel somewhere. Nothing is wet either. Will a leak on the return side darw down the fuel supply side and cause this issue.... Its not like me to be stumped like this but I guess things can happen. If this continues I will be changing the injection pumps but first off I will do an compression test and yeyball the glow plugs.... Somehow I can't see all of the glows burned out and the lite staying on for the same amount of time but.... Anything could be possible... No idas from this end....
My motor has always started on the first 1/4 to 1/2 turn no matter how cold or hot the outside temp is. I could let it sit without a start for almost 2 weeks and it would start the same way... Now I need to stay on the starter for around 5 seconds. Then it lites off. No ruff running or smoke. The glow plugs take the same amount of time till the lite goes out. No air in the filter comming out the shrader either. All I have done lately is turn down the fuel. I have the new BB injectors in it and the Moose pump is working fine... I'm just loosing fuel somewhere. Nothing is wet either. Will a leak on the return side darw down the fuel supply side and cause this issue.... Its not like me to be stumped like this but I guess things can happen. If this continues I will be changing the injection pumps but first off I will do an compression test and yeyball the glow plugs.... Somehow I can't see all of the glows burned out and the lite staying on for the same amount of time but.... Anything could be possible... No idas from this end....
motox tech
Full Access Member
no fuel in crankcase so far w/new pump.
This problem was with old pump, and I replaced lift pump 2 weeks ago, thinking I had problem solved. Have been changing oil every 2 tanks, untill now.(thank God I dont drive far to work) seems the problem is the leaky injector. Today I noticed,after cleaning and drying the VP again, then clearing drain, that the fuel is filling glow plug void, and flowing into valley pan.Only seeps at idle, but aparently under load its leaking more than I thought.
New return line kit should patch me up. But old pump was with out a doubt, leaking into case.
Thanks for the suggestions, there greatly apreciated.
motox tech
Full Access Member
I noticed a hole in intake next to glow cavity, which does lead to valley pan. Never noticed it before, but think this is the culprit. Did not realize how much fuel that one injector was leaking. Once I got drained cleaned out and vp dry, the baby powder worked wonders.
Thanks for the help
Newly
f-two-fiddy
Registered User
You need to find out if it's leaking from the return, or the tip. Running it without a seal on the head will ruin the inj very quickly.
motox tech
Full Access Member
Good point! Im pretty certain its leaking from return cap cause the crappy kit I bought last time, more than half of the caps would not click down onto the o rings. In fact the only new ones that would fit right were the corners, or 90.
Never had such bad luck with a return kit. But when I do the lines Ill definately look into the tip leak as suggested.
Thanks
I don't think it is really possible to leak from the tip. Perhaps if the injector body and nozzle were not screwed tightly together... but I've never seen that either. The cap or the nut is the only real place I've ever heard of a fuel leak manifesting itself.
Gary, with regard to your problem. If you have a block heater, plug it in and lets see if that effects the issue at all. We need to determine if your lack of ignition is missing heat or fuel. Your running an electric fuel pump, so I'm thinking it has to be heat, but I can't for the life of me figure why it wouldn't lite right off. I think you've implied this is only a problem with the first start of the day, so that's why I'm hoping a warm block will rule out time to cool as a factor. The only other thing I can think of, is if your injectors are leaking down. That could potentially drain off the verticle portion of the fuel injection line, and require several pump rotations to replace the lost fuel.
Gary, with regard to your problem. If you have a block heater, plug it in and lets see if that effects the issue at all. We need to determine if your lack of ignition is missing heat or fuel. Your running an electric fuel pump, so I'm thinking it has to be heat, but I can't for the life of me figure why it wouldn't lite right off. I think you've implied this is only a problem with the first start of the day, so that's why I'm hoping a warm block will rule out time to cool as a factor. The only other thing I can think of, is if your injectors are leaking down. That could potentially drain off the verticle portion of the fuel injection line, and require several pump rotations to replace the lost fuel.
