little car as much as i can find out, as i add to my notes the information i get from nice people on this site still i wish to hear more, on this mercedes the fuel injector pump is very high pressure i know, but as this pump is very old what type of signs can i look for that would tell me the life of the pump is almost over, do they just stop working, and never fuel the motor again, or do they go out slowly, i have found 2 more complete motor and trans setswith pumps for $75.00 each,plan to buy them just for parts, but could you give me some information about that pump and what i should know about it, thank you
2007-02-08 14:15:31 · 7 answers · asked by JALISCO 2 in Cars & Transportation ➔ Car Makes ➔ Mercedes-Benz
also should i worry about getting in it some morning and the auto trans going out, or are they too, built to kep on going like the motor.
2007-02-08 15:39:38 · update #1
Those cars are pretty much bullet proof. They will take a beating and run for almost ever. You have problems finding used part in Europe for them since buyers from the African countries and the middle east buy up every one they can get their hands on.
The pump will sometimes give you a warning by starving the engine for fuel. This will make the car noticably slower. Then they just go out. Normally the pintle wears down and sticks. That is in the middle of the pump.
The transmissions normally go South slowly. Slipping or taking long times to catch a gear.
2007-02-08 20:56:16 · answer #1 · answered by shovelkicker 5 · 2⤊ 0⤋
Never is a long time, but I've never known the injector pumps on these cars to fail. That said, the recent change to ultra low sulfur Diesel in the US may result in a reduction in service life, but it's too soon to say. I guess for $75 it couldn't hurt to have a spare.
What does sometime fail is the manual pump that you use to prime a new fuel filter. But you can buy them new for a few bucks, it's hardly worth the effort to salvage an old one.
The one thing you have to be careful of on these motors is the vacuum pump (on the front of the motor). When the diaphragm goes, usually without warning, it allows oil to pollute the entire vacuum system. That will destroy your brake booster, door locks, ignition switch, transmission modulator, etc. In short, that's what kills these cars. You can proactively replace the pump, but a better strategy is to cut the large plastic vacuum hose and splice in a clear plastic fuel filter. The filter will not affect the flow of vacuum, but if the diaphagm breaks, it will trap some of the oil. This will provide some protection to the vacuum system. But more importantly, you can judge the health of the system just by looking at what's in the filter. Check once a week, and you'll be able to react fast to a problem.
2007-02-09 05:06:06 · answer #2 · answered by anywherebuttexas 6 · 2⤊ 0⤋
Well to be honest I have a 240D W115 and my injection pump is sqrewed on it but the problem on most of the 240D's is the Injection Pump Diaphram. thats the first thing to go on those pumps. All the diaprams are made up of are small pieces of leather that has a unique shape to it, but it pushes fuel into the motor. If that diapram is ruptured i will not fuel the motor like normal, which mine does. To get mine going with the sqrewed diapram i have to push the primer pump while the car is cranking over and then it startes, but once the car is going mine is fine to drive with the ruptured diaphram.
Hope that help.
2007-02-13 15:49:28 · answer #3 · answered by Anonymous · 1⤊ 0⤋
I loved all of my 240Ds. there bulletproof. I have had them with well over 300,000 miles on them when I sold them. I used to add a qt of auto transmission fluid every other tank of fuel. That seemed to quiet down at a idle. Do the fuel filter thing and change the oil every 3,000 miles.As for the 2 spair engines, you will probably use them for boat anchors be for you need them for parts. These cars are so reliable they were (and still are) used as cabs in Lebanon. I have moved on to a 560 SEL but still have a soft spot in my hart for the 240s
2007-02-08 15:11:45 · answer #4 · answered by Boston Mark 5 · 2⤊ 0⤋
They do go out slowly, if you do your oil and fuel filter thing and your car keep getting more lazy, it means your fuel pump getting weaker, you can turn your timing ahead a little, that will help,but to have a spare is a good idea, even thou you may never use it.
2007-02-12 07:18:52 · answer #5 · answered by dvilly 2 · 1⤊ 0⤋
A defective fuel pump will sometimes make noise before they stop, If your driving up hill and it start to sputter that's another sign. If you keep the fuel filter changed every 20K miles and 1/4 of as tank of gas in it it will likely last 100K or more. Good Luck and GOD Bless
2007-02-08 14:25:20 · answer #6 · answered by Anonymous · 0⤊ 1⤋
You can get a kit to rebuild the pump.email me at tccservice111@yahoo.com I just bought a 83 300sd.
2007-02-09 21:07:02 · answer #7 · answered by Anonymous · 1⤊ 0⤋