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Old 08-09-2006, 02:26 PM
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Join Date: Aug 2006
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Question HELP! W124 300TD new head no go

Hi I'm a Brit living in Spain getting my spares and advice from the U.S.
Have just had a new cylinder head, sourced from clearwater cylinder heads Florida fitted to my 1989 300TD turbo estate.
My Spanish mechanic says he can't get it to start and has had the head on and off 3 times to check alls OK.
I assume he thinks the fuel pump is OK. My Spanish is not so good.
He asks me if it has an immobiliser fitted.
I'm not sure as I have never had a key fob or similar.
I seem to remember the horn sounds if I unlock the passenger side first.
I guess thats some form of alarm.
How can he check whether it is immobilised or not?
Any help gratefully received


Last edited by trefor; 08-09-2006 at 04:07 PM. Reason: No response
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Old 08-10-2006, 12:43 AM
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Dieseldiehard
 
Join Date: Oct 2002
Location: Bay Area No Calif.
Posts: 4,415
Quote:
Originally Posted by trefor View Post
Hi I'm a Brit living in Spain getting my spares and advice from the U.S.
Have just had a new cylinder head, sourced from clearwater cylinder heads Florida fitted to my 1989 300TD turbo estate.
My Spanish mechanic says he can't get it to start and has had the head on and off 3 times to check alls OK.
I assume he thinks the fuel pump is OK. My Spanish is not so good.
He asks me if it has an immobiliser fitted.
I'm not sure as I have never had a key fob or similar.
I seem to remember the horn sounds if I unlock the passenger side first.
I guess thats some form of alarm.
How can he check whether it is immobilised or not?
Any help gratefully received
I doubt if the car has an immobilizer installed.
To immobilize a diesel would require some tricks, like a valve on the vacuum line that would hold the stop lever on the Injection pump down (forward). Or someone might try to prevent the starter motor from turning but that is easy to bypass, the starter can be operated with a jumper wire connected to the terminal strip on the inner fenderwell.

If it doesn't start it may be just air in the injector lines. Try squirting WD40 into the air intake (air filter removed) as a starting fluid. NEVER let anyone use Ether or the stuff designed for starting gasoline engines on a diesel)
This resumes the timing is set properly (using the RIV indicator - an electrical box with two LEDs on it)
With fuel it will/should start after all air is purged from the fuel supply lines

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