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PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   Diesel Injectors, Replace or Rebuild (http://www.peachparts.com/shopforum/diesel-discussion/266416-diesel-injectors-replace-rebuild.html)

Aquaticedge 11-30-2009 10:45 AM
no, I've not checked them, a force of habit I cycle them 2 times... but I'll look into them, It wouldnt surprise me if one or a few broke.

oldsinner111 11-30-2009 10:45 AM
I read on some site that leaky injectors,burned a hole in a piston.This was a om 616. Next time mine are rebuilt I'd like to go with the highest setting.It's supposed to be great for biofuels.

C Sean Watts 11-30-2009 10:52 AM
Quote:
Originally Posted by toomany MBZ (Post 2350406)
I would think the only way for diesel to pool in the cylinder is a timing problem, but pull and test 'em.
You may have a glow plug issue, have you checked them?
GPs are a strong possibility. When they are on the test bench, I leak test them after pop pressure and pattern tests. There could be a leak but it would need to be enough to make them loose some prime after shut down. It's not common but one or two injectors in a whole set isn't out of the question. BUT watch out everybody, Kent B. will put this on one of his 'special laminated manuals' copyrighted from "the source" and we'll be expected to pay for it :P.

C Sean Watts 11-30-2009 11:24 AM
Quote:
Originally Posted by oldsinner111 (Post 2350415)
I read on some site that leaky injectors,burned a hole in a piston.This was a om 616. Next time mine are rebuilt I'd like to go with the highest setting.It's supposed to be great for biofuels.
YES, leakers can melt pistons and other things.

NOT my photo. To: the fellow forum member who posted this - THANK YOU, I don't recall at this time who but it's a good lesson.
Go to post #21 and see the photo.

Diesel911 11-30-2009 12:11 PM
Quote:
Originally Posted by Aquaticedge (Post 2350282)
When I start my car for the first time of the day, It sounds like it misses for a very short time then idles normally.. It's like a sputter run sputter sputter sputter run normally... And it only does it the first start of the day. I can let the car sit all day in a parking lot and it wont do it, always in the mornings... Could one of my injectors be leaking and having diesel pool in the cylinder? I plan on replacing them all and the heat shields January or February.. as this month is motor mounts, motor shocks and a valve adjustment
An Injector that the Nozzle Seat was so bad it leaked all the Fuel out while your car was parked would also work poorly after starting.
And, a pool of Diesel on top of your piston at the very least would cause some severe knocking when you start up.
There would also be smoke.


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