Non turbo, injectors R&R question? - PeachParts Mercedes-Benz Forum

fred98050 · #1 04-27-2010, 03:14 PM

1980 300TD Non turbo.

I have been reading quite a bit about replacing the injectors on this forum and I wanted to know if after replacing the injectors the IP had to be adjusted or not? Some thread suggested it, don't know if this applies to the 617 or not...

I know I can replace the injectors myself but I have no idea about adjusting the IP and really don't want to mess with it.

Thanks

biopete · #2 04-27-2010, 03:27 PM

I think you'll be ok. I've never adjusted time afterwards on the three cars i did it on. For wvo, i am going to advance my timing on my car though.

The pop pressure seems to rise when you put new nozzles thus retarding the timing a bit. But it will wear down over time like the old ones did.

We just did it to a 240D non turbo. Put in turbo nozzles and it runs good. You may get some nailing at first but they should break in nicely.

Advancing the timing or checking it does not hurt and you can do it after if your car does'nt seem to run as good and your timing is off.

fred98050 · #3 04-27-2010, 07:39 PM

Quote:

Originally Posted by biopete

I think you'll be ok. I've never adjusted time afterwards on the three cars i did it on. For wvo, i am going to advance my timing on my car though.

The pop pressure seems to rise when you put new nozzles thus retarding the timing a bit. But it will wear down over time like the old ones did.

We just did it to a 240D non turbo. Put in turbo nozzles and it runs good. You may get some nailing at first but they should break in nicely.

Advancing the timing or checking it does not hurt and you can do it after if your car does'nt seem to run as good and your timing is off.

Thanks Biopete.

JEBalles · #4 04-27-2010, 08:06 PM

Quote:

Originally Posted by biopete

I think you'll be ok. I've never adjusted time afterwards on the three cars i did it on. For wvo, i am going to advance my timing on my car though.

The pop pressure seems to rise when you put new nozzles thus retarding the timing a bit. But it will wear down over time like the old ones did.

We just did it to a 240D non turbo. Put in turbo nozzles and it runs good. You may get some nailing at first but they should break in nicely.

Advancing the timing or checking it does not hurt and you can do it after if your car does'nt seem to run as good and your timing is off.

I'd be careful with adjusting the IP timing. Apparently, it's much different than spark-ignition timing, and if done wrong, can seriously f things up.

Diesel911 · #5 04-27-2010, 08:57 PM

At some point in time you may want to re-time your Fuel Injection Pump.
Search for Drip timing. The other Alternative if your Fuel Injection Pump as the Hole/Plug on the side for it is to use the Fuel Injection Pump Locking Pin.

If you ever do the Drip Timing; at least for the first time I recommend having some one else keep pumping on the Hand Primer for you to keep the pressure even while you concentrate on rotating the Fuel Injection Pump and counting the drips.

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