Question about 1990 Mercedes-Benz 190

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Why car hard to start when cold

Hard starting when engine cold. once it start it will keep running if you turn it off it will start right away

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

emissionwiz
  • 75197 Answers

SOURCE: hard start

have u done a fuel pump pressure leakdown test? if not do one, the fuel pressure must stay within 5 PSI of the pressure at engine shut down for 24 hours, if it leaks down u will get a hard start and long cranking times, I suspect this is the problem but do the test, u will need a fuel pressure test guage (avail from Kragen auto), the test port is on the tiop of th engine in the fuel supply rail to the fuel injectors, looks like a metal tire valve.

Posted on Jan 14, 2009

  • 28 Answers

SOURCE: C220cd 2002 model, if parked >10hours won,t start

you have a faulty injector

Posted on Jan 18, 2009

  • 163 Answers

SOURCE: I have a 1986 190D Mercedes-Benz, the problem i'am

Check your fuel pump pressure. You can rent a fuel pressure gauge from autozone and check pressure coming from supply pump. I bet its weak. Hope this helps.

Posted on May 09, 2009

  • 1 Answer

SOURCE: Driver side AC on 2003 Mercedes E500 does not blow cold air.

this problem is A/c system leaking.add enough freon R134A will solve the problem .but you must check where is leaking important.

Posted on Jul 15, 2009

  • 64 Answers

SOURCE: c320 cranks and doesnt turn over right away on

Check,

  • clogged air filter
  • air intake sensors
  • spark plugs
  • reset the ecu computer
  • pls vote!!

Posted on Sep 24, 2011

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1 Answer

2008 captiva hard to start cold tried a new battery


Could you supply a little more info . What is ment by hard to start ? When you turn the key the engine cranks ok but won't start right away ? Or the engine doesn't spin ?

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2.0d x-type 2005 Est. Starting problems when engine is warm


Ok, time for car school. The vehicle is operated by the computer, every electrical concept that is. When the engine is cold, it starts fine because the computer has placed it in "cold start mode", putting more fuel into the engine than normally would until Once the engine is warmed up, a temperature sending unit or temp sensor tells the computer to change to normal run mode. IF said temp sensor is faulty and is not telling the computer to make said change, it stays in cold start mode, still dumping excess fuel in the engine that is now not required, cause it's warmed up. Like keeping the choke closed on older vehicles. Now I think you can answer your own question, when this no start action is happening after warm up and it always starts fine when cold, what's the first thing you check ? Right, the unsuspected temp sensor. Change that and no more start problem. Have a wonderful day. Glad I could be of service.

Jul 11, 2017 | 2005 Jaguar X-Type

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96 tahoe won't start when cold unless you spray engine start into the throttle body intake. Once started it runs great and will restart as long as it is warm?


you need a new electrical choke, if you do not have one on the carbutor you can buy one and install it. it start the car right away at a high idle adjusting itself down to a low idle when the engine is warm. very cheap part. you will be very happy. no engine start to start your car.

Jul 07, 2009 | 1996 Chevrolet Suburban

1 Answer

2000 chevy blazer starting issues


swng,
1) Is the service engine soon light ever on when engine is running?
2) Per your description I would look at the ECT sending unit. It sends coolant temperature information the the Engine Control Module for proper fuel delivery for cold engine start. It may have lost its calibration.
Let me know.
Regards,

Feb 24, 2009 | 2001 Chevrolet Blazer

2 Answers

1994 mercury villager


Start with engine cool. Remove rad cap, top up coolant, start engine, & turn on heater (not defrost). let it run until up to normal operating temperature & radiator fan comes on, then shuts off. Let it do this about 3 times before you put rad cap back on & top up return bottle to proper level. Every once in a while, rev engine slightly for a few seconds while your doing it, to speed up bleed by increasing flow. Keep an eye on temperature gauge for too hot, and fan not coming on, if so, shut it off.

Jan 29, 2009 | 1995 Mercury Villager

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