Hi

I had a leak from the throttle shaft on my injection pump. Long story short, cocked up the repair, needed a new pump.

Couldn't afford new or recon, so bought 2nd hand that had been sat on shelf for a while.

Fit went well, all timing spot on, now starts first knock.

But, there's a leak on the "new" pump where the fuel distributer (is that the right term?) meets the pump body.

Research tells me it's either a dried and shrunken oring, or a cracked oring.

I want to avoid taking the pump back off and risk cocking up repairing it if I can.

Someone mentioned Wynn's Engine Stop Leak would revitalise old orings, so I have a can ready to go, but obviously, that's designed for oil system treatment rather than the fuel system.

So my question is: Is it safe enough to give it a try? Has anyone any similar experience they could share?

Cheers

I'm afraid you'd be ****ing in the wind mate !! The pump will need replacing or rebuilding!! Don't buy a pump that's been stood dry !! Never any good!!!

Thanks, but horse/door/bolt springs to mind.

Anyone else got an opinion?

ferretboy has given you the right answer.

Even though this thread is old, I will put my opinion because I had a similar situation. I bought a used 300tdi and put it in my defender. Very shortly after getting it in and running the FiP started leaking. Rather than going for a rebuild my friend and I replaced the O ring on the (Throttle shaft ?). It was a cheap ebay part. Six months later still going fine, no leak, knock on wood.

dstainton said:

Even though this thread is old, I will put my opinion because I had a similar situation. I bought a used 300tdi and put it in my defender. Very shortly after getting it in and running the FiP started leaking. Rather than going for a rebuild my friend and I replaced the O ring on the (Throttle shaft ?). It was a cheap ebay part. Six months later still going fine, no leak, knock on wood.

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Throttle shaft O ring is an easy job, and will work if the governor housing isn't too worn. Provided you are clean and don't contaminate inside the pump, no worries.
More complicated pump jobs are definitely best left to FIP specialist.