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Topic
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The Car: 1984 Mercedes 190d 2.2L Naturally Aspirated Engine. 5spd manual trans. 254,000 miles
I’ve had this car for about 6 years, but I didn’t drive it much because it never really ran great. It has suffered from a poor idle and low power since I’ve had it. It gets worse as the car heats up and after it has been driven a bit. About a year ago I decided I was going to learn how to fix it up. The only knowledge I have is from online reading, a couple friends, and now thanks to Eric, I have gained more knowledge an confidence than ever so this will be be a fun project. My goal is to turn this into my daily driver. I commute 35 miles to and from work and its possible in the next year I will have a job that has me traveling for work so I would love to have this car to do it with.
What I’ve done so far:
- Rebuilt fuel injectors with new nozzles, “pop” tested a balanced them.
- Replaced fuel screen in tank
- Replaced primary and secondary fuel filters
- Replaced vacuum fuel delivery pump
- New pads, rotors, brake hoses and front calipers (also working on parking brake, had to remove them for now)
- replace return valve on the injection pump
When I replaced the return valve I discovered that at some point mine was in the wrong place and the previous owner had installed it in the inlet side of the injection pump, starving it for fuel… because the plungers in the pump are lubricated with diesel fuel, its quite likely the injection pump is not functioning properly and at the very least needs to be calibrated.
Where I’m at now:
- Used injection pump ordered, waiting on delivery
- pulled the cylinder head due to compression loss on the #1 intake valve — Trying to decide the best way to proceed…local rebuild, send it away to a benz specialist for rebuild, or buy a rebuilt head…
254,000 miles…just getting broken in. Hard to see in the picture but check out the cross hatching! That was nice to see!
messy, but organized!
Thats it for now…I’ll keep you all posted…. wish me luck!
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Well here is a quick update on this thread. After I got the information that the website was being redone I decided to hold off on updating this thread and then time just kind of slipped away, but after having my valve job done and replacing the timing pump with a used unit I have driven this car about 6000 miles and averaged over 44mpg during that time! The compression on this 28 year old engine with 262,000 miles is incredible. I’ll have to post those numbers if I can dig them up from a few months ago.
I’ll be switching over to driving my jeep for the winter and I’ll probably continue to work on this while it sits in my garage. Plenty of projects left on this one to get it to the condition. I’d like.
Well here is a quick update on this thread. After I got the information that the website was being redone I decided to hold off on updating this thread and then time just kind of slipped away, but after having my valve job done and replacing the timing pump with a used unit I have driven this car about 6000 miles and averaged over 44mpg during that time! The compression on this 28 year old engine with 262,000 miles is incredible. I’ll have to post those numbers if I can dig them up from a few months ago.
I’ll be switching over to driving my jeep for the winter and I’ll probably continue to work on this while it sits in my garage. Plenty of projects left on this one to get it to the condition. I’d like.
44 mpg?! I love diesels! I want one of these old Mercs so bad, saw a 83 300D for a steal on craigslist and just cringed that I didn’t have the money.
44 mpg?! I love diesels! I want one of these old Mercs so bad, saw a 83 300D for a steal on craigslist and just cringed that I didn’t have the money.
[quote=”LJ11194″ post=38871]44 mpg?! I love diesels! I want one of these old Mercs so bad, saw a 83 300D for a steal on craigslist and just cringed that I didn’t have the money.[/quote]
Yeah they all get good millage especially when you consider how old they are and how heavy they are, but this one in particular is about the smallest car they have made as well as a very small engine and a 5spd manual, which was not very common. That combined with me driving 55-65mph for millage gets me into the mid 40s.
I talked to a guy who worked at a repair shop the other day who had a 300d that he ran off filtered, used motor oil… I guess it wouldn’t matter the millage if your fuel was free! Although motor oil and waste oil seems to be very bad for the injection pumps.
[quote=”LJ11194″ post=38871]44 mpg?! I love diesels! I want one of these old Mercs so bad, saw a 83 300D for a steal on craigslist and just cringed that I didn’t have the money.[/quote]
Yeah they all get good millage especially when you consider how old they are and how heavy they are, but this one in particular is about the smallest car they have made as well as a very small engine and a 5spd manual, which was not very common. That combined with me driving 55-65mph for millage gets me into the mid 40s.
I talked to a guy who worked at a repair shop the other day who had a 300d that he ran off filtered, used motor oil… I guess it wouldn’t matter the millage if your fuel was free! Although motor oil and waste oil seems to be very bad for the injection pumps.
Ive also seen some diesels run on transmission fluid too, not to mention vegetable oil.
Id stick with the actual ‘real’ diesel fuel though if i had a diesel.
Ive also seen some diesels run on transmission fluid too, not to mention vegetable oil.
Id stick with the actual ‘real’ diesel fuel though if i had a diesel.
My buddy had a Deuce and a half with the multifuel system which supposedly could run on any liquid that can burn without damage. Ironically straight gasoline is the one thing that wasn’t good for it. He never wanted to try, always put normal diesel in it, but I’m sure it’d do what it says on the tin.
My buddy had a Deuce and a half with the multifuel system which supposedly could run on any liquid that can burn without damage. Ironically straight gasoline is the one thing that wasn’t good for it. He never wanted to try, always put normal diesel in it, but I’m sure it’d do what it says on the tin.
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