Just getting tired of it. It always start on the second try, but rough with vac. gauge in the red. I searched many thread re vac. leak, which I believe it to be but could not find any.

After reaching normal temp. vac. gauge rises a bit, but not totally to the left and idling is better but not smooth.

What I've done so far:

1. cap and rotor replacement quite recent.

2. replaced fuel filter, accumulator, and check valves, very recent.

3. replaced air filter, spark plugs H9DC, very recent.

4. air / fuel ratio is in the 50's.

5. sprayed propane gas to all connections, in the hunt for vacuum leaks.

6. ICV sprayed clean.

Hot starts are 100 %. Warm starts and 50 /50.

This is my daughter's and wife's transport, so I just wanted to make it right.

Thanks for any inputs.

__________________
joel

Prayers bring forth enlightenment.

anyone?

__________________
joel

Prayers bring forth enlightenment.

have you checked the temp sensor for the fuel inj.?correct me if i'm wrong but i gather from your post that the problem is cold start.

__________________
David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg

Another cause can be leaky injectors and or seals.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html

thanks for the reply. i am debating this issue but am not sure which injector is leaky. any idea on how to trace it?

__________________
joel

Prayers bring forth enlightenment.

Nope. A fancy Bosch machine could probably figure it out but I'm not sure there is a great way to shade tree it. I think thats why it plagues so many M103 owners who have done everything right and still can't track it down. I think you might have to remove them all and take them in for testing to get real data.

__________________
-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/831799-post13.html
http://www.peachparts.com/shopforum/831807-post14.html

thanks for the reply.

yes and no. yes, i have to double click in the mornings or at cold starts, and most at warm starts.

and no, if i do not use the car for say 2 to 3 days, it fires up at one crank.

is it the cold start sensor you're referring to?

__________________
joel

Prayers bring forth enlightenment.