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  #1  
Old August 26th, 2013, 12:04 AM
Hudson
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Hudson
1987 110 200Tdi
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Injector pump leak

My 200tdi has a leak at the rear of the injector pump at the connection with the pipes to the injectors. I've tried tightening, removing and refitting, and even had my local shop give it a go, but they're still leaking just as badly. Is the solution to replace the pipes or is there a larger underlying problem? Alternately, is there some type of crush washer that can seal the leak?
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  #2  
Old August 26th, 2013, 09:56 PM
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Michael White
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My 300 Tdi was leaking at the head, where all the lines to the fuel injectors are connected. That's probably where yours is leaking. Take a look at this thread:

http://www.defendersource.com/forum/...ad.php?t=40982

It's not too bad of a job to replace the head seal in situ.
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Old August 26th, 2013, 10:40 PM
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Robert Davis
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Quote:
Originally Posted by Hudson View Post
My 200tdi has a leak at the rear of the injector pump at the connection with the pipes to the injectors. I've tried tightening, removing and refitting, and even had my local shop give it a go, but they're still leaking just as badly. Is the solution to replace the pipes or is there a larger underlying problem? Alternately, is there some type of crush washer that can seal the leak?
The back of the pump has a short adapter fitting just about 2" long that connects the injector line to the back of the pump.

Where exactly is it leaking from and what have you tightened exactly?

You'll need to investigate this in order to fix your leak.
Cranking on the line can damage the compression fit on the adapter end and do nothing to fix a leak that is happening at the other end of the adapter fitting.

Tight is tight and over tightening a fitting that is not leaking will only cause a new leak or worse damage something.
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  #4  
Old August 27th, 2013, 12:12 AM
Hudson
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Hudson
1987 110 200Tdi
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Quote:
Originally Posted by michael67 View Post
My 300 Tdi was leaking at the head, where all the lines to the fuel injectors are connected. That's probably where yours is leaking. Take a look at this thread:

http://www.defendersource.com/forum/...ad.php?t=40982

It's not too bad of a job to replace the head seal in situ.
Thank you for the suggestion. I did have a leak from the injectors a while ago, but replaced the copper washers there when I replaced my head gasket. The leak is definitely coming from farther down because the head and tops of the injector pipes are dry.

Quote:
Originally Posted by rdavisinva View Post
The back of the pump has a short adapter fitting just about 2" long that connects the injector line to the back of the pump.

Where exactly is it leaking from and what have you tightened exactly?

You'll need to investigate this in order to fix your leak.
Cranking on the line can damage the compression fit on the adapter end and do nothing to fix a leak that is happening at the other end of the adapter fitting.

Tight is tight and over tightening a fitting that is not leaking will only cause a new leak or worse damage something.
The leak is almost certainly coming from around the nut that holds the injector pipe to the injector pump. I didn't tighten (or over tighten) these, just checked that they were not loose. I've learned my lesson long ago about over tightening compression fittings! As far as the adapter fittings, I don't see that in the parts manual and it's too dark to check mine out. Is that something that's on all 200tdi's? If so, do you have a part number or source in case these are the culprit? Anyway, I think I'm going to start by replacing my injector pipes. They're crusty and I bet the compression fittings are warped/damaged/pitted/etc.
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  #5  
Old August 27th, 2013, 06:24 AM
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Bill Adams
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Let's hope none of those are cross threaded or bunged up in any way.
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