Engine Fuel Leak

[OhioCowboy]

I've been turning off the fuel at the filter bowl for the last year to stop a fuel leak somewhere near the fuel injectors. No problems starting or running. Just seeps fuel out whenever I park it. drip...drip...drip... I'm getting weary of forgetting to turn the fuel on and forgetting to turn the fuel off. Forgetting to turn it back on is the real PITA. This spring I want to fix it. Possible O ring in an injector? If so, is this something that I can do or is it something I should pay the dealer to pickup/fix/return to me?
Thanks

 

[Gordon Gould]

Is it a Lucas CAV pump that is leaking ? And does it leak at the throttle and/or shut off shaft ?? see pic.
If so, it is a pretty straight forward $10 -$20 fix. Replace a gasket and 4 O-rings, I have some links to online help I can give you if this is your problem. I did mine last summer.



gg

 

[Gordon Gould]

Cowboy look at this thread - go to the end. I have two posts in it with some good instructional links on that repair.

http://www.tractorbynet.com/forums/...ford-tractor-cva-post4016020.html#post4016020

hope it helps

gg

 

[OhioCowboy]

Good instructions-thanks will keep in my references. Here's a picture of where my leak is on my tractor. Seeping from one of the 3 tubes by the red arrow. I crack them open to bleed air when needed in addition to the bleeder shown just above the leak. Maybe I'm wrong and those 3 are not the injectors? The injectors are at the other end of the tubing (Yellow arrows)?

 

[Gordon Gould]

You are right that is an injector line. When I read o-ring fix and saw you had a ford I assumed (incorrectly) that you might have the very common throttle shaft drip on Lucas CAV pumps which are on lots of fords.
Sorry to send you in the wrong direction and good luck with it.

 

[OhioCowboy]

After digging a little I see it is leaking from the top of the injector pump. The injectors are at the other end of the tubing (top yellow arrow)

 

[OhioCowboy]

Not a problem. My original question was not clear. I'm not all that familiar with diesels and their components yet. Thanks for your help.

 

[DT86]

Not a problem. My original question was not clear. I'm not all that familiar with diesels and their components yet. Thanks for your help.

We all have to start somewhere!

The bottom yellow arrow, opposite the injectors, is pointed to the fuel delivery valves.

 

[OhioCowboy]

Thanks for that. In case anyone else might have the same problem, Here's a diagram that shows there are 3 o-rings on each of the "delivery valves" - part #5 is the delivery valve assembly (thanks DT86). I'll start with part # 2 o-ring then #15 if that doesn't stop the leak.

 

[OhioCowboy]

Maybe I won't be able to replace the o-rings. According to Messick's website the pump is not seviceable. I have to buy the whole pump for $1,100-$1,400 instead of replacing a 50 cent 0-ring. ......I don't think so....