Question about 1991 Mercedes-Benz 420
I am completely frustrated!!! I have to return to my mechanic 6 times to try to fix my hard start problem, it only does this when it has been running and driving for a while and then when it sits for about 20min to an hour I have to crank it at least twice and then when it final starts it vibrates very bad and finally start but runs rough for a few seconds then starts to run smooth again. My mechanic has replaced the fuel pump, fuel distributor, check valve, idle control valve, 02 sensor, fuel regulator valve, and all new vaccum hoses, coolant temp sensor...I'm now $1,300.00 into this and I'm not very happy with my mechanic!!! Someone please help!!
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
hi,seem all part have been check,to check further,you need to use a pressure gauge, to check the lower and upper chamber of your fuel distributor,only dealer have the tools,valve clearance is a hydraulic valve,no need to adjust,seem your car start,engine timing is ok,ty
Posted on Apr 01, 2009
just went thru the same think wit a s 430 it was the crank position sensor . 60 bucks at auto zone and it took me 5min. 2 install if u need help feel free to call me 918 808 9706 chris
Posted on May 15, 2009
Tips for a great answer:
Feb 26, 2015 | Mazda Cars & Trucks
Sep 24, 2013 | GMC Sierra Cars & Trucks
Nov 06, 2011 | 2002 Saturn VUE
Jun 03, 2011 | 2001 Dodge Ram 1500 Truck 2WD
Mar 22, 2010 | Pontiac Sunfire Cars & Trucks
Nov 15, 2009 | 1995 Chevrolet K2500
Oct 26, 2009 | 1994 Chevrolet Cavalier
May 28, 2009 | 1990 Buick Riviera
Feb 20, 2009 | 2000 Mercedes-Benz S-Class
Oct 15, 2008 | 1992 Mercedes-Benz Mercedes Benz 400 Class
Jun 25, 2014 | 1991 Mercedes-Benz 420
66 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: