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Post by mazdajack on Dec 21, 2021 19:16:55 GMT -5
Hey Ya'll.
My truck which has been my daily driver just shut off while I was driving and refusesto start. Cranks over fine. Wasn't idling rough or anything before. Seems to be a few delivery issue. My uncle says that i should add an inline low pressure fuel pump. Is this a good a idea? If so is it ok to have it run all the time or should it run on a relay just when starting the vehicle?
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Post by rob on Dec 22, 2021 15:06:44 GMT -5
I have a Mazda. This is what I found in mine, from tank to fuel pump... My fuel tank was full of rust. I found a good radiator shop and they cleaned and coated my tank. My sedimenter was full of gunk. I removed and cleaned it. Fuel filter was replaced. Still running good. Rob
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Post by mazdajack on Dec 28, 2021 19:03:55 GMT -5
I was a little low on fuel, so i thought maybe i was just out of fuel... But there was still 3+ gallons of diesel left in the tank. I poured 5 more gallons in and pressurized the tank to get the fuel up to the primer pump, then i primed the system after changing out the fuel filter. After some cranking i did manage to get the truck started. But it bogged down a bit periodically and then shut off. And when I would go to start it would require a lot of cranking to get her started. I never really had this issue. All my glow plugs are new and she always fires right up
I decided to drop the tank to see if it was rusted, but it looked fine. I cleaned out the sedimentor too which was full of awful gunk. and am gonna put all fresh hoses by the tank.
I think there's an air leak somewhere. Any tips on how u can properly diagnose this would be really helpful. I haven't seen any leaks from the Injection pump, but i did notice a but if a raw diesel smell from that area a while back, and sometimes it makes a bit of a squeaking sound. The throttle body o-ring seems like a common trouble spot from what I've read, but i feel like i would see a fuel leak if it were an injection pump issue. Any other ideas of where this thing could be sucking air and how to diagnose this?
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Post by rob on Dec 28, 2021 19:15:25 GMT -5
My B2200 has a vent hose from the top of the tank to fresh air. It's simply a piece of hose open on the end.
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Post by montana on Dec 29, 2021 4:35:25 GMT -5
You would not necessarily see any tell tale signs of the IP throttle shaft seal leaking. It could be sucking air past the seal after the engine shuts down, requiring excessive cranking the next time you go to start.
An inline pump could aid as a temporary fix but it's only masking the real problem.
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Post by mazdajack on Dec 29, 2021 12:10:13 GMT -5
You would not necessarily see any tell tale signs of the IP throttle shaft seal leaking. It could be sucking air past the seal after the engine shuts down, requiring excessive cranking the next time you go to start. An inline pump could aid as a temporary fix but it's only masking the real problem.
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Post by mazdajack on Dec 29, 2021 12:11:55 GMT -5
You would not necessarily see any tell tale signs of the IP throttle shaft seal leaking. It could be sucking air past the seal after the engine shuts down, requiring excessive cranking the next time you go to start. An inline pump could aid as a temporary fix but it's only masking the real problem. Yea. I could see that. Do you think of o pressurized the fuel system a bit i would be better able to detect any micro leaks?
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Post by montana on Dec 31, 2021 5:07:22 GMT -5
It would not hurt to try but if you don't see any leaks it doesn't necessarily rule out the possibility of leaks.
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Post by mazdajack on Jan 3, 2022 1:07:27 GMT -5
There was this super small little piece of plastic inside the fuel vent hose that only lets a pin hole of air out for the fuel vent on top of the tank. Doesn't look like it broke off of anything. Almost seems like it's a part of the design. Does anyone know what this is for?
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Post by mazdajack on Jan 4, 2022 23:59:07 GMT -5
Air leak was coming from the bleeder screw on the filter housing. Added an o-ring and she's running much better. I think there might be another leak near the primer pump, so I'll probably go ahead and replace the whole fuel filter assembly at some point
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lucas
New Member
Posts: 14
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Post by lucas on Jun 12, 2022 23:23:14 GMT -5
MazdaJack, i think i have a similar issue in the ongoing saga of the MK1 Ford Transit with an S2 engine!! I have to bleed the system from the filter out union, then the diesel return pipe on the top of the pump then at the top of the injectors every time i want to start it! I have checked all the pipes from the top of the injectors to the pump so far. I also stripped and cleaned the sedimentor. The next check will be the filter housing then....
Any other tips?
Lucas
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Post by mazdajack on Jun 13, 2022 12:21:38 GMT -5
MazdaJack, i think i have a similar issue in the ongoing saga of the MK1 Ford Transit with an S2 engine!! I have to bleed the system from the filter out union, then the diesel return pipe on the top of the pump then at the top of the injectors every time i want to start it! I have checked all the pipes from the top of the injectors to the pump so far. I also stripped and cleaned the sedimentor. The next check will be the filter housing then.... Any other tips? Lucas If your engine has the same fuel filter housing as mine there is a fuel bleeder screw. I found that air was coming into the system at this point.i would love to swap the filter housing assembly with something different eventually, but since I found the source of the leak( the bleeder screw of cracked) i retapped it and put a new screw in with an o ring. Works fine now. Some guys have had a low psi fuel pump running before the filter and that helps get the air out of the system. The injection pump shop i trusts said low psi will not harm the pump, but so far for me this addition has not been necessary.
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Post by DieselDavo on Jun 14, 2022 19:04:31 GMT -5
Did you use the hand pump until it got hard to press down after it died?
When using the hand pump press down, then open the bleed valve and tighten before letting the plunger come up. Repeat until all the air bubbles stop. If you keep getting air you have a line leak or are out of fuel.
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