CAV DPA Injection Pump problem

[Jcorstorphine]

I am in a dilemma over the best route forward regarding problems with my Ford 1600 diesel engine.

Last season, I had a problem when the engine started to make a horrendous knocking noise which was traced to one of the injectors having a small piece of steel stuck in it. The thought was that it may have been debris from the high pressure fuel lines so these were cleaned by blasting the insides with a connection to a pressure washer and dried with some acetone.

The engine ran perfectly for about 20 hours but just as we were getting the boat pulled out for the winter, the knocking noise came back indicating yet another injector misfiring.

Latest advice I have been given is that it may be the CAV DPA pump breaking up, one theory being the “bearing” starting to fail.

I have two alternatives thses being to get my existing pump stripped, the alternative being to get my spare DPA pump checked which was bought on Ebay as being fully serviced! but was it?

The advantage of using my existing pump is that it can go direct back on timing marks but apparently, a new pump will require the timing to be reset. Advantage of getting my (possibly) fully serviced pump checked is that it should only require the seals changed as it has been lying in the garage of about 7 years.

Any thoughts or shared experience with CAV DPA Pumps.

Also posted on PBO forum

 

[ulyden]

I have one in my garage! Best advise! Change to a bosch type!
I have done it two times on a Ford 2.5litre! Used bosch pumps are cheap and reliable!

 

[Jim@sea]

If I was you I would take the pump to an Engine Specialist who repairs and does reconditioned pumps themselves, I had a problem with an Iveco diesel engine running badly, I used a mechanic who I had used before who specialised in diesels. Unfortunately nobody knows everything. Anyway he diagnosed a faulty turbo, so £350 later plus cam belt, labour VAT etc, the engine was started,
NO Difference. So I rang an Engine Specialist told him the problem and he immediatly diagnosed the problem over the phone as it appeared that my particular pump was prone to internal metering failure when being started in freezing weather as the springs get brittle with age and break when cold. Obviously my mechanic did not know this. Anyway £190 later for an exchange pump the engine was like new. So go to a specialist.

 

[tinkicker0]

Take out the stop solenoid. If its full of metal swarf, bin the pump.