I was able to get my 86' 300 SDL (603)

to idle higher on WD-40 sprayed into the intake!!!

I will run down all it IS doing
I am getting fuel to the pre-filter (I see it flowing into it)

My lift pump is new and working (old one was working too! wanna buy it?)

I by passed the fuel termastat

all new fuel lines in engine bay to and from filter ect.

new+balanced injectors

it is getting air

exhaust is not plugged

and all the other things posted previously (this is just a recap)

So I am getting enough fuel to start the car
and it idles fine but falls on it's face (no RPM rise more than about 100
no matter how much throttle I give it)

But It will rise in RPM if I feed it fuel into the intake and move throttle linkage by hand as I squirt fuel in!!!

as a side note engine doesn't really like WD-40 as a fuel but it worked

so that's all that really matters results speak volumes!


So I need advise

should I buy an injection pump?

should I buy a used one for $450?

My school of thought is I have one why not get the one I have fixed?

Is this something I can take off and put new one on if I get a used one?

I am not "HIGHLY SKILLED" but I am not "HIGHLY STUPID" just ignorant!

but I am willing to learn

Anybody know somewhere I can buy a good I.P. for a 603.xxx
or a rebuilt and swap my core?

You can change the injection pump yourself. I believe I would make some effort to find a used pump at less than 450.00. Even try advertising on our parts section of the forum. Theres got to be lots of junk 603s sitting.

Anything more than a hundred for a used pump make sure they gaurantee it is good or your money back. I like a used pump just removed from an engine over one that has been sitting around.

Also you might describe the problem to an injection pump place and get a reasonable quote on just repairing the one issue with no recalabration if possible. I think your internal problem is more of a mechanical issue of some sort.

At this point I do not know if checking out your existing pump or at least trying to soak it is worth attempting. The rack is either partially stuck or something has let go to or from the govenor feed.

If you can see an inspection panel on that pump and it is accesable you might have a look. Fortunatly for you there is a cheap timing lock tool for your models pump. So simply following instructions will get the injection pump into place again without much hassel.

Somebody in an earlier post made mention of removing the shutoff valve and checking the rack. I do not know enough myself to comment on the validity of that. They may have experience so you could drop them a note to find out.

I did remove the shut off and looked in there
but I don't know what I am looking at or for?

I did call a bosch service center about 50 miles away

they don't rebuild I.P.'s?
maybe just dishwashers and drills or maybe my bosch power box radio ha!

but they did refer me to triangle diesel
"it might be $1000-1500"
I said I'll let you know!!!

You said about $100 for a used one hell I'll buy three!!

Nothing is too good for my benz (or my dog Rizzo)
I'm single and have no kids so this car gets all the good stuff
but I don't want to over pay you know being unemployed and all

I'll look around on this site but I want to move pretty fast
it's been sitting too long I am itchin' too drive it!

all of the time and stress and don't forget about the $$

and this whole issue was my unmolested alda was fine one day

and the next mourning wasn't fine

superior turbo and injection in detroit MI did the service on my IP
and conculded that the alda went bad

now if I could just get the damn thing in as perfect time as it was the first time I put the IP in