6.9 Ford Diesel - Return Check valve clogging repeatedly

I have posted videos describing some of the problems I am having with this OLD 1986 Ford 6.9 IH idi Diesel.

It runs perfect, as you will see in PT 2 of my video's on this truck, when the check valve stays open that limits flow to the return from the pump.

I think that when it becomes stuck shut from the Governor Flex ring bits, I thought is was algae/dirt/residue, it becomes stuck shut/open.

I believe that this Allows the Injection pump to be internally over-pressured at its own internal transfer pump - that is before the main Nozzle pressuring pump. That is or something? - I am not sure ...

EITHER WAY I NEED A NEW PUMP I THINK.

Category:

Autos & Vehicles

Tags:

• Ford
• Diesel
• Puller
• Injection
• Pump
• Problem
• Weird
• Fuel
• Issue
• IH
• International
• IDI
• F250
• F-250
• F350
• F-350
• Stanadyne
• Winter
• Oil
• #1
• #2
• Kerosene
• Hemp
• Bio-diesel
• MN
• WI
• Wisconsin
• Governor
• Flex
• Ring
• Issues
• fuel
• heater

[atlashayco]

.... So noooo Bad Head. Replace the pump, injectors, fuel lines, fuel/water seperator (I have another new one -get it for 30$, new for a cummins semi)

It runs great.

I had ... about ... 3-4 fuel leaks, and low fuel in the tank causing intermittent stalling for about the last 2 weeks ...

I have noticed that alot of ford diesels when at the Stations pump will trip the full tank shut off ... I thought I had a bad fuel gauge or connector ... but my farm/gravity tank filled it !!!

[farmallboy8989]

6.9 is a durable engine i have one with 300,000 miles almost

[atlashayco]

... It should be great ... we have been in the deep freeze, but I should have it back together here in the week ... with a new video. Hopefully static timing is good == LOL ... I like the last guys comment .. "Its a blown ring, its a piece of shit engine, I got around 110,000 miles out of mine before I scrapped the truck. "

Liars - the world wouldn't be the same without them ....!!!

[atlashayco]

The check Valve is right on the forward top side of the pump. So you open the hood. You will see a fuel line coming off of the front/top side of the pump. The check valve is INLINE/connected behind the fuel line I described. It has a glass bead that is modulated to open/close fuel flow with a spring.

I am now replacing the pump. Pulled it OFF tonight.

I will have to get more video!

[mrpattyjohnson]

Free stage III's! Does it drive pretty terrible when you drive it?

[atlashayco]

Free stage III's ???? you have some nice injectors??? I just bought new ones for this truck ....

[maxhauler]

I have both info and questions regarding issues around the check valve, such as details about it and the pros/cons of eliminating it and the connection to the filter head altogether. I'm just confirming some info and I'll probably make a video about it. So how did your replacement of the injection pump go? My understanding is that if they get water in them then they can begin to corrode, leading to little bits which then clog up or stick open the check valve ball.

[bluejay148]

maybe the pump going bad

[jjason23296]

I wouldn't care about smoke lol Is that unburnt diesel fuel coming out the pipe??

I had the same problem with my 7.3 but it was only when I was starting it .

[killeenking254]

@atlashayco hey i just seen your video im kinda haveing the same problm with my truck but when you find what wrong can you let me know?

[buzzindozen]

FLEX RING IN PUMP IS BAD. UPDATE IT

[spencnaz]

It's running like you've got a blown head gasket.

[duanedragon2]

Holy Mother of Atomized Hydrocarbons! That thing is running a bit rich. What a drag it must be to have to strain the return line to keep chunks of injector pump out of the check-valve.