Author Topic: Removing injectors and fuel rail method and tips??  (Read 197 times)

irvine

  • Classic
  • **
  • Posts: 205
  • W116 Enthusiast
  • Location: Sydney nsw au
Removing injectors and fuel rail method and tips??
« on: 19 February 2019, 05:32 PM »
Hey guys, I’m looking to to refurb the whole fuel system from the fuel pump to the injectors.

I know I have a problem with injector 3, the spark plug always looks a bit sooty and has a smell of petrol. Almost like it’s giving out too much fuel and leaking.

Is there a method to removing the injectors and fuel rail without removing the intake manifold, are there any special tools needed??

Also what should I replace on the injectors?? Just the seals and o-rings plus a good clean??

The motor in question is 280se M110 d-jet.

Thanks,
Neil.

Diesel 617

  • Classic
  • **
  • Posts: 192
  • Location: Illinois
Re: Removing injectors and fuel rail method and tips??
« Reply #1 on: 19 February 2019, 06:12 PM »
Just ordered all the parts to do the exact same thing, same vehicle as well.

I already pulled the injectors out, very easy, carefully crack the lines off. Then unbolt the metal plate that holds the injectors down, then simply pop them out with a screwdriver. I also have my fuel distributor off and this might have provided a little more room. Took maybe 20 minuets.

If your already doing the job, new seals and rings will help you sleep at night. a few bucks for piece of mind, is worth. If the o rings and no longer flexible, and are shaped to the injector they are no longer doing the job. Replace them.

You *may* need to take the intake manifold off to access your warm up regulator if you plan on having it refurbished. I know you can get it off from the top side of the vehicle, a bit tricky but it can be done. As I found out the other day from UTn_boy the manifold part number is 110-141-13-80. Its 12 or so. Soak those studs in wd-40 before you try to open them up, a warm engine could also help.
1980 300SD Retired
1979 280SE Euro Spec Import Crank Windows and Cloth Seats


Inventory Price
1980 450SEL/SE 722.004 Trans 150kmi ($50)
1978-1980 300SD Trans 260k mi $50
-2 450 Pairs + 300SD pair bad boots Axles $25/45
-3.07 450/300SD Differential $30

irvine

  • Classic
  • **
  • Posts: 205
  • W116 Enthusiast
  • Location: Sydney nsw au
Re: Removing injectors and fuel rail method and tips??
« Reply #2 on: 20 February 2019, 02:11 AM »
Cheers for the info, I’ll get on with ordering up some seals etc.

I did see a write up regarding cleaning/refurbish the warm up regular, I must dig that up before I start.
Did you have have a crack at it yourself or send it off? 

Neil.

irvine

  • Classic
  • **
  • Posts: 205
  • W116 Enthusiast
  • Location: Sydney nsw au
Re: Removing injectors and fuel rail method and tips??
« Reply #3 on: 22 February 2019, 09:14 PM »
Just been searching some eBay venders for injector replacement parts. Is there anything in pertaining I should replace???
Obviously I’m doing the plastic seal with    o-ring and the injector holder. (D-jet injectors)

Thanks,
Neil.


Diesel 617

  • Classic
  • **
  • Posts: 192
  • Location: Illinois
Re: Removing injectors and fuel rail method and tips??
« Reply #4 on: 23 February 2019, 08:50 AM »
Hmmm I have a k-Jet I missed that in your original thread

For my warm up regulator and fuel distributor the gentlemen at http://www.cisflowtech.com/ handled it all for me. A+ only begins to describe the service I received. Small 3 bay shop, but then have rebuilding these system down to a T. I'n a post to come I'll detail out why this is such a phenomenal shop. They might ship out to Australia if you have no quality rebuilds out by you. These guys had about a 100 cores out the cahzoo. I think it was 250usd or so?

It should be just the two seals. I have never seen a d-jet before, but if you can find the part numbers, get all the seals to accompany it.
1980 300SD Retired
1979 280SE Euro Spec Import Crank Windows and Cloth Seats


Inventory Price
1980 450SEL/SE 722.004 Trans 150kmi ($50)
1978-1980 300SD Trans 260k mi $50
-2 450 Pairs + 300SD pair bad boots Axles $25/45
-3.07 450/300SD Differential $30

irvine

  • Classic
  • **
  • Posts: 205
  • W116 Enthusiast
  • Location: Sydney nsw au
Re: Removing injectors and fuel rail method and tips??
« Reply #5 on: 24 February 2019, 12:28 AM »
Thanks for the info mate.

Neil.