i have a Ford transit 2.5 diesel and am currently encountering
problems.

the problem is that when the van starts its runs smoothly for a few
minutes before the engine gives a bang and lots of black smoke i have
read posts and this seems to be quite a common problem however there
never seems to be any solutions.

any information will be greatly appreciated

thanks 

graham

"dodgydeals1"  wrote in message 
news:1125401233.991799.217440@z14g2000cwz.googlegroups.com...

>i have a Ford transit 2.5 diesel and am currently encountering
> problems.
>
> the problem is that when the van starts its runs smoothly for a few
> minutes before the engine gives a bang and lots of black smoke i have
> read posts and this seems to be quite a common problem however there
> never seems to be any solutions.
>
> any information will be greatly appreciated


Could really do with soe more infor about the van.

What age is the van?

What do you mean the engine gives a bang?

Does the engine smoke at idle, when revved or all the time?

Has this appeared suddenly or gradually?


If you can give me some answers to those questions, I'll point you in the 
right direction.
From what you've said so far, possibilites are Injection Pump, Injectors, 
Timing, valve problems, EGR valve problems, fuel air locking. There are 
plenty other possibilities.

moray

In article , 
dodgydeals1 says...

> i have a Ford transit 2.5 diesel and am currently encountering
> problems.
> 
> the problem is that when the van starts its runs smoothly for a few
> minutes before the engine gives a bang and lots of black smoke i have
> read posts and this seems to be quite a common problem however there
> never seems to be any solutions.
> 
> any information will be greatly appreciated
> 

You need to take it to a diesel specialist to have the pump and timing 
checked over.


-- 
Conor

"You're not married, you haven't got a girlfriend and you've never seen 
Star Trek? Good Lord!" - Patrick Stewart, Extras.

we have taken the head off and the pistons and rings are okay the bang
was the oil filler cap blowing out and the van is Y reg milage 70,000
rgular services the head gasket appears to be okay but we will replace
when rebuilding looking like EGR valve or injector pump any
suggestions??

thanks 

graham

In article , 
dodgydeals1 says...

> we have taken the head off and the pistons and rings are okay the bang
> was the oil filler cap blowing out and the van is Y reg milage 70,000
> rgular services the head gasket appears to be okay but we will replace
> when rebuilding looking like EGR valve or injector pump any
> suggestions??
> 

Blocked breather? Summat is building up the pressure in there.


-- 
Conor

"You're not married, you haven't got a girlfriend and you've never seen 
Star Trek? Good Lord!" - Patrick Stewart, Extras.

"Tim.."  wrote in message 
news:df3ntn$rgb$2@nwrdmz02.dmz.ncs.ea.ibs-infra.bt.com...

>
> "dodgydeals1"  wrote in message
> news:1125440124.296049.319930@g47g2000cwa.googlegroups.com...
>> we have taken the head off and the pistons and rings are okay the bang
>> was the oil filler cap blowing out and the van is Y reg milage 70,000
>> rgular services the head gasket appears to be okay but we will replace
>> when rebuilding looking like EGR valve or injector pump any
>> suggestions??
>
>
> You still have not told us which model of Transit is it, and the engine
> fitted!
>
> Tim..


On a Y-reg, to be a 2.5 diesel it must of been a late registered old style 
(95-2000) transit.

I've never seen one of these engines blow out the filler cap (I'm sure the 
filler cap can not come of when the bonnet is shut, as it rests against the 
bonnet lining).
Anyway, obvious checks would be to check for excess blow-by gases (remove 
filler cap with engine running at idle, and see how much gas flow is coming 
out it. There should be a gentle flow of gases, but if you can visually see 
exhaust gases coming then there's a major problem most likely with the 
pistons/rings/bores)
Next would be to check the engine breather (built into the filler cap). 
Remove all the connecting pipes and check for any obvious blockages. Also 
subsituting the filler cap for a known good one is worth a try.
Next check would be the EGR valve. Check that the operating linkage (the one 
from the top of the pump to the EGR valve itself) is properly connected, and 
adjusted correctly. When the throttle is held full open on the injection 
pump, the roller (also check the plastic roller is still there, as they do 
fall off - ideal replacement is the head of a monobolt, as the plastic 
roller isn't available seperatly) on the EGR valve should be just past the 
peak of it's track.
Another possibility to try is temporarily disconnecting the stainless steel 
pipe coming from the exhaust manifold,
Next thing to check would be the engine timing. I've seen many belts jump a 
couple of teeth, and can cause the exact running you describe (lots of 
smoke/no power).

If none of the above showed up anything, i'd then be checking for the fuel 
system airlocking. This is a known fault on this engine, and the rework is 
to alter the injector leak off pipe routing. Instead of being blanked off at 
the front injector, with the leak of pipe return line to the tank connected 
to the rear injector, the rear injector is blanked off, and a new long 
return pipe is fitted to the front injector.

Then if all that hadn't shown anything, next item to get checked would be 
the injectors. You'd need to take them off and get a diesel injection 
specialist to check them, and any decent specialist would be able to tell 
you if they were blocked, and if there is any obivous fault with the 
injection pump (common for the later bosch pumps to brake up and clog the 
injectors - has the van been noticably slower recently?)

Failing all that, you're looking at a major mechanical problem with the 
engine, which would then require the removal of the cylinder head for 
further inspection.