if anyone can help it would be great. i have a 85 500sec and the car will not idle and it also hesitates when you try to pedal up for power ,if you gradually pedal up i can get full throttle but the car will not idle, a note this car sat for awhile so i thought the gas was bad i pulled the fuel pump ,filter and cleaned them out, i also took the fuel dist off and cleaned it up the piston moves freely, i took out the injectors cleaned them up as well as the fuel lines i seem to also have a similar problem with my 924 porshe they both have this **** mechanical fuel injection any help would be great, also does anyone know of the procedure to swap out the m/b motor for a chevy 350 i heard of this and might be intererested in a posible swap if i continue to have fuel issues thanks in advance

does seem to sound like a fuel issue

Do a search
been a few threads discussing this lately

http://www.peachparts.com/shopforum/showthread.php?t=200979

http://www.peachparts.com/shopforum/showthread.php?t=199782&page=2

Think its the CIS K injection
I got it too
darn things are not great hot starters

Mine starts fine if its cold & it sat but least it runs
Good luck

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83 500 SEC Euro 198K

Actually the fuel injection system on that car is very very simple and reliable. it also lasts about forever. no system will work if it is gummed up with bad fuel.

if you get it working right it will give a long reliable service life.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Thanks

I was getting a bit concerned
as mine is a 82/83
Don't expect it to be the best in the world
but would like it work reliably

Good to know
I was hoping I didn't get a really bad fuel system
I am aware they have hot starting issues
inherent in them
even the manual has a note you may have to press accelerator ro start do a hot start...

Sometimes simple is better
less computer/electrical control

Good ole benz
Hope I get mine happy & it lasts almost forever

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83 500 SEC Euro 198K

I would check the simple stuff first such as fuel pumps, vacuum leaks. Then do the more harder stuff such as testing the electrical components such as the wiring harness and sensors, components of your fuel system. Between that you should be able to find it.

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)

just wondering round the engine
reading threads
crossing my fingers
hoping I find it...
Thanks,

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83 500 SEC Euro 198K

High idle is likely same cause different symptom:
IE high idle can be due to dirty ICV, vac lines old and cracked, throttle body dirty, etc Engine and computer likey trying to compensate for something else that has set and is not operating up to standard. Hard start could easily be caused by bad or dirty injector as a result of sitting for a time. Also, the cold start valve, which is really another fuel injector that injects directlyin to the intake for fast start when cold could aslo either be dirty, bad, or leaking. SO, many of the things that you are annoyed about could be from lack of use and varnish or gum accumulating or just being dirty from use and age and sitting undriven. See why it could benefit from a long highway speed drive, it heats things up, burns of bad gas and blockages and gummed up injector system. You might find something fixed after the drive and if you dont, it was still fun.
Note: Cheveron Techtron gas has a small amount of the same cleaner Techron, that I want you to buy and use periodically in your fuel tank, say at least once a year or twice, you dont drive it much, I have done it as often as every 3 months in my 16v with no negitive results, only a fast clean, nicely handling engine.
PS - My pride and joy, 1986 2.3-16v doesnt always start right up on the first key turn either and I paid a bit over 3 times what you paid for your new baby to get this one is such good condition from Florida, big deal. I could be an endless search to finally get all the possible reasons sorted out to get it to guarantee it starts on the first turn. Who cares, it is running well, all else is within specs, valves set correctly and babied with tons of new parts casue I like to turn wrenches. Just drive it.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red

I will give it Chevron no problem gas station is 2 blocks away so its the closest...

Thanks will work on more vac hoses when I can peel back the ignition wires away
Not touching them til I have new
rubber connection on dius boots is old I can see one cracked

Like to find that icv & clean it
think its about a $100 part can't remember

Oh it starts cold like a champ even after days
right up fast & strong almost immediate
Never had a car start like it does

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83 500 SEC Euro 198K

Order some parts like that vac hose on line as long as MB doesn't have it
sometimes its alot cheaper sometimes not much

Tranny thing is scary
Don't know about that...

Hope its nothing serious...

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83 500 SEC Euro 198K

CS,
If it starts right up cold, the cold start valve is likely good. When it snorts the extra fuel in the chamber it cant help but start right up. After the computer registers a warm or hot engine, the cold start valve is taken out of operation to avoid a too rich mixture.

If you icvis only $100 I am jeolous, mine for a 190E is about $200 to $240 for OEM new

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red

Don't feel jealous
I just looked it up and it may not be OEM
Says retails for $700
there price $213

must have though of anotherpart

Trouble w my car is I can't look up 83 500 sec
I have to either do 83 380 sec or 84 500 sec
then there is the chance the part won't be right
So I can't gamble w $200 parts

part says for 3.8/5.0
so I might look up 83 380 & see if part is same

Well, ICV is same on 2 years so guess thats it


http://www.germanimportedparts.com/Order/PartDescription.aspx?PartNumber=000-141-1225&linecode=141

Ignition wires is a different thing

Guess I;ll have to find it & cllean it but its hiding



I got the tecrron conc
walked to the corner to get it
hate to fuss with that stuff at the pump
So now I have the dilemna
got about 3/4 tank & this stuff treats 20 galx
So I got to figure out qnty of techron conc..
or dump it all in & leave it concentrated or top it off with a few gal.

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83 500 SEC Euro 198K

Whew! The tranny was way low...Bad Charlie, BAB,Bad Charlie....I should have checked it before driving down to Valencia. Took the spark plugs out and replaced them with the correct ones, the old ones were Bosch, but have the numbers and letters RO 836. I don't know what this translates too. The old ones are not that bad, all have the nice brownish white color. but the sharp corners of the electrodes are now rounded and the gap was too big.

While I had the Air cleaner off, I did the carbcleaner trick on all the vacuum connections I could see and no increase in rpm's. noticed that some had newer rubber conn. than others so some have been replaced.

Maybe my cold start valve is bad, because it'll never start and stay running with just the key. However this morning it was cool out and it did start and stay running, so maybe it works. ??? I'm getting weary chasing this stalling out and not starting.

It ran pretty good today going down the mountain.

I have an OPR coming this week.

I just took my 380SE from Acton to Valencia MB to get the correct spark plugs and wiper blade refills. Got the plugs and they only had One refill, luckily my passenger side wiper is like new. I need to buy the vacuum hose between the engine and the brake booster. $54.00 from MB and they would have to order it. I waited on that. Car did something in Valencia that scared the bejeebers out of me. It would not shift into second or third, range from a stoplight. just reved up. I was close to the MD dealer(didn't even think of the MB roadside assistance) and by the next turn it seemed fine. Parked in the dealership lot and went in and bought my parts.(boy you spend some bucks on the googahs, clothes, model cars, and widgets on the wall). I got back in the car and it didn't start right up like usual, but I helped it and then it started and idled fine(this might be cleaning up on it's own). I did fill the tank with premium and dumped in a can of cleaner($6.00 range). I didn't have any problem with the car all the way back up the mountain home. That tranny thing scared me. I thought I lost the tranny right there. Tells me I need to drain the tranny and replace the filter.
anyone else experience the tranny not shifting and the engine just revving up?? SCAREY!
But she didn't do it again, and she made it up the mountain with no problems.
Car didn't get above 85C the whole trip.

Me tooooo! on the tranny thing. I'll check the level this afternoon. I'm waiting on the car to cool off some before I change out the plugs.
The wiper refill at MB was only $4.00 and change, so you must be getting a pair from German Star. Cool.
Yep I'll be looking for that vacuum hose online this afternoon while the car cools down.

Ya never know what to expect from these old cars that have set awhile. It may be as simple as a Modulator valve needing changed. Or just the fluid and filter changed(that's what I suspect, a piece of crud in a ball valve in the tranny.
Scared the bejeebers out of me at the time though!

Put the fuel addative in full bottle and have it a little stronger than it would have been, no harm. None at all.
If you have part number you need to check after you find them on line, you or I can look them up on the EPC online program with your exact VIN and car type from Europe and confirm that it is the part you need since you have to lok them up with a diff car and year. The Online parts system can confirm that the parts are correct, it does not give MBs current price, but it gives everything else, including how many of the part is used throughout the entire car. So for say the vac elbows, it shows how many you need.

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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red