What Injectors?

Disconick · Nov 17, 2008

Hi all,
Have a Disco 1, fitted originally with a V8, but the previous owner fitted a Tdi "Wheezel", which i have found, is out of a Defender.
When i first got it, it seemed very good on fuel, and pulled OK, if that's possible

But I was wondering if the reduction in fuel economy, and it's sluggishness, would be down to the Injectors being C**p.......

The Engine No. starts with 16L, which i'm told is a defender, but not sure if it's 2.5, or a 300 Tdi, as I didn't fit the engine, and cannot contact the guy to find out either.......

How do I tell the difference?

And would fitting new 'jectors give me any noticeable improvements?

Thanks all.........
Nick.

disco dude · Nov 17, 2008

pass on injectors causeing an econamy problem, you can get them tested at a good garage or they will be able to tell you where you can get them tested. or you could try adding a fuel injector aditive to your fule

check tyre pressure, air filter, fuel filter. have u serviced the running gear? are there any brakes sticking on? if it has a turbo have you cleaned the intercooler and pipes? is the egr valve faulty?

if it has an engine management system has there been a fault that is causeing the mixture to over fule. hope some of this helps

baz

Disconick · Nov 17, 2008

Thanks Baz, will get the garage to have a sniff round it, and see what they say.......

Nick.........

shiznmatt · Nov 17, 2008

Hi 300tdi engine is a 2.5 aswell.

Davec · Nov 18, 2008

16L is 300Tdi Defender, as shiznmatt says, 3
300Tdi is 2.5l

Disconick · Nov 18, 2008

Can I find the engine size stamped on the Engine anywhere, or is it down to the Engine No.?

Davec · Nov 18, 2008

The engine size is 2.5 l, what else do you need to know?
What other size could it be?

Disconick · Nov 21, 2008

Sorry davec,
was led to believe that it came as a 2.5 and a 3.0, guess that i really AM that stoopid!

discomania · Nov 21, 2008

It will be a 200tdi or 300tdi, both 2.5 litre turbocharged engines. The 200tdi was the earlier of the two and looks like this. If it doesn't look like that you have the 300tdi.

discomania · Nov 21, 2008

300tdi

thebiglad · Nov 22, 2008

Disconick said:
Hi all,
Have a Disco 1, fitted originally with a V8, but the previous owner fitted a Tdi "Wheezel", which i have found, is out of a Defender.
When i first got it, it seemed very good on fuel, and pulled OK, if that's possible But I was wondering if the reduction in fuel economy, and it's sluggishness, would be down to the Injectors being C**p.......

The Engine No. starts with 16L, which i'm told is a defender, but not sure if it's 2.5, or a 300 Tdi, as I didn't fit the engine, and cannot contact the guy to find out either.......

How do I tell the difference? And would fitting new 'jectors give me any noticeable improvements?

Thanks all.........
Nick.

Injectors can be expensive so before you start handing out loads of dosh, start changing/checking cheap things such as:

1. If it has a fuel sedimenter, take it off and clean it. - cost £0
2. Change the fuel filter - cost £6.28 for all three filters
3. Change the air filter - cost see no.2
4. Take off the turbo pipes and check the outside and inside for wear and delamination. - cost for replacements £20-40 depending on rubber or silicone.

There's a couple of things to be getting on with,

Good luck

Dave

Disconick · Nov 24, 2008

thebiglad said:
Injectors can be expensive so before you start handing out loads of dosh, start changing/checking cheap things such as:

1. If it has a fuel sedimenter, take it off and clean it. - cost £0
2. Change the fuel filter - cost £6.28 for all three filters
3. Change the air filter - cost see no.2
4. Take off the turbo pipes and check the outside and inside for wear and delamination. - cost for replacements £20-40 depending on rubber or silicone.

There's a couple of things to be getting on with,

Good luck

Dave

Thanks for the tips Dave,
Had the intercooler pipe off the top of the intercooler, (Intercooler to inlet manifold) and it seems to be soaked in engine oil

Does this mean the turbo may of S**t itself?

Didn't have time to remove the bottom pipe, (turbo to intercooler) but would assume that's the same..........

As for the Fuel filters, it has been converted from a V8 to a 300Tdi, so would they have used all 3 filters as a standard Diesel would have? or would they just use the main filter and head assembly that is attached to the bulkhead, as that's the only ones i can see.........

thebiglad · Nov 24, 2008

Disconick said:
Thanks for the tips Dave,
Had the intercooler pipe off the top of the intercooler, (Intercooler to inlet manifold) and it seems to be soaked in engine oil
Does this mean the turbo may of S**t itself?
Didn't have time to remove the bottom pipe, (turbo to intercooler) but would assume that's the same..........

As for the Fuel filters, it has been converted from a V8 to a 300Tdi, so would they have used all 3 filters as a standard Diesel would have? or would they just use the main filter and head assembly that is attached to the bulkhead, as that's the only ones i can see.........

The rubber hose that's most important to check is the elbow from the turbo to the straight metal intercooler pipe.

Re oil in the pipes, it is normal to have a certain amount.

Re fuel filters, on a TDi300 it has the normal bulkhead mounted one and a fuel sedimenter.

Disconick · Nov 24, 2008

OK Dave will get the elbow pipe off in the morning and have a look........
if it's just soaked in oil, and not falling to pieces, is that ok? just worried that the intercooler may be bunged up with oil and stuff, as the oil that came out the top hose actually dripped out slowly when pointed at the ground.......

thebiglad · Nov 24, 2008

Disconick said:
OK Dave will get the elbow pipe off in the morning and have a look........
if it's just soaked in oil, and not falling to pieces, is that ok? just worried that the intercooler may be bunged up with oil and stuff, as the oil that came out the top hose actually dripped out slowly when pointed at the ground.......

Cleaning out the intercooler is part of normal servicing so it might be a good idea to do it now, while you've got the hoses off.

It's an easy job, get the 'cooler out of the vehicle, fill with white spirit or similar, agitate, leave to soak, agitate again and drain.

Make sure it is really drive before you reinstall. Job done.:drum:

Disconick · Nov 24, 2008

Will do Dave, Have some spirit and a big drum of thinners, and Acetone which will shift anything!!!!!!!!!

(Right, where's me overalls..........)

thebiglad · Nov 24, 2008

Disconick said:
Will do Dave, Have some spirit and a big drum of thinners, and Acetone which will shift anything!!!!!!!!!

(Right, where's me overalls..........)

I'm not 100% sure but I think that acetone is NOT reccomended for this job as the intercooler is made from alu alloy.

Disconick · Nov 24, 2008

Good point.. will stick with the white spirit first, then a rinse through with thinners as it evaporates better. and any residual fumes will make the 'ol girl cough and fart, I bet!

discoed up · Nov 25, 2008

It is best to ensure that the intercooler is totally free of anything that the engine could run on ie anything flammable. A mate of mine several years ago did a clean through job on a 525tdi BMW, put it all back together and on start up it pulled in all the flammable fluids he had cleaned it with and revved itself to destruction, it wasnt a pretty sight!!!!!

What Injectors?

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