Author Topic: Help removing Injectors from M189.986 engine....  (Read 5135 times)

scoot

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Help removing Injectors from M189.986 engine....
« on: June 20, 2015, 16:31:16 »
I'm having a little problem removing the injectors for cleaning from my W112.015.   I have removed the center allen bolt and the retaining block.  At that point I can move the injectors around but the will only come out a little and are clearly hitting on things.  So I removed the two allen bolts on either side of the block in which the injectors are resting.  Now the block and the injectors move more freely, but I still don't have enough clearance to remove them.  My best guess is that now I should remove the valve cover, since that is where everything is hitting.   Is that correct?  Or am I doing this all wrong...

thanks
Scott
Scott Allen
'67 250 SL (early)
Altadena, California

scoot

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Re: Help removing Injectors from M189.986 engine....
« Reply #1 on: June 20, 2015, 17:18:50 »
Got one out with more wiggling.  As with the intake manifold, it's really dirty.
Scott Allen
'67 250 SL (early)
Altadena, California

Benz Dr.

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Re: Help removing Injectors from M189.986 engine....
« Reply #2 on: June 21, 2015, 01:54:43 »
I have NOS just in case you need any. They should pull out without to much effort.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

scoot

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Re: Help removing Injectors from M189.986 engine....
« Reply #3 on: June 21, 2015, 02:05:39 »
Hi Dan !!!!

I managed to get them all out and cleaned and all of them properly "chirp".  The biggest problem I had was getting them to not leak on the test bench where the pressure line connects to the injector. 

I'm afraid to ask how much a new injector is...   I believe that MSRP is around $3000.

Thanks
Scott
ps - the bakelite parts that hold them in - two of mine are cracked and one is replaced with an aluminum block (which looks quite effective).  Thoughts?

Scott
Scott Allen
'67 250 SL (early)
Altadena, California