Rough Running

[rustprooflandyracer]

My 2.25 Naturally Asmatic diesel, is running incredibly rough,

Symptoms: Poor starting, clanky noise that seems to be throttle related, with blue smoke from the exhaust, on the over run, there is a load rasping noise from the exhaust with black smoke (when going down hillwith no throttle and letting the engine brake). It is running rather hot aswell.

Possible problems: Timing and injecto pump need a good over haul, butterfly incorrectly set, The valve stem oil seals probably need replacing, temperature sender is wrong for the head I hae fitted or a head gasket needs replacing.

any other suggestions/ advice would be amazing.

Thanks

[andyb]

Has this suddenly happened or has it been getting worst over time?

[rustprooflandyracer]

I was suddenly driving when, I lost alot of power, with huge amounts of blue smoke and a real rough running acceleration, the engine was also struggling to hold a idle. Adjusted the butterfly in the inlet manifold, seemed to cure the problem however, there is still a definitive clanking noise from the engine, and blue smoke along with previously described symptoms.

Cheers

Matt

[Fuddy as muck]

Had very similar problems with mt Transit diesel N/A. Turned out the timing belt had jumped a couple of teeth due to a lump of dried mud falling off of the timing cover.

Darren   

[andyb]

Think I would probably check the timing then....could be that the timing chain tensioner is on it's last legs and the chain has jumped a tooth.....a bit like Darren is suggesting.

The only other thing that I can think of is that you have lost a pistion ring...or part of one. I have seen this on 3 2.25 n/a diesel engines now. Seems that when they start to burn oil due to wear then a long run or lots of 'hard' work can accelrate the problem and eventually a piston ring breaks up.

Check the timing first; otherwise it could be a head off job.

Sorry that it all sounds like doom and gloom.....you can always wait for a third opinion if you want :)

[rustprooflandyracer]

Well, I'll be annoyed as it has just had a recon engine after 16k of miles on it, so I'm hoping it will be just the timing or a worn injector pump. Cheers for the advice