85 190E - Struggles to start

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jboa40 - 22 Apr 2005 23:59 GMT

Hello All,

1985, 2.3 190E - When left overnight or long periods of inactivity, the
merc struggles to start. It eventually does start and runs fine.

Once running, if shut off and restarted immediately - starts great.
Once running, it shut off and restarted within an hour - starts great.

But leave it shut off for longer, becomes a bugger to get running again.

When the key is turned in the ignition, the engine turns just fine - but
doesnt catch. Have to turn the engine a few times before it gets going.

Once it's running the engine is smooth ie no rough idling or variations
in rpm.

Any suggestions where to start looking?

Thanks
Jerry

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Tiger - 23 Apr 2005 14:41 GMT

Sounds like your fuel pressure dropped to zero overnight... so in the
morning, when you start up... it takes a while to bring up the pressure.

I would check your fuel filter area for any slow leak of gasoline... It
couldn't be your accumulator because it would give you a hard hot start
problem.

I would also check the fuel distributor for leak there too...especially the
black module attached to it... Maybe you just need to change the o-ring
there.

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Tiger - 23 Apr 2005 14:41 GMT

One other possibility but rare... cold start injector.

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marlinspike - 23 Apr 2005 16:02 GMT

You know, I would check the water levels in your battery, because mine
once did the same thing, confused the heck out of me, then confused the
heck out of the mechanic (everything holds pressure and everything
checks out fine), so I just lived with it. One day I checked the water
levels in my battery and one cell was dry, I topped it off and the
problem went away. I don't think it's a fluke because I know one other
person who had the same situation.

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jboa40 - 24 Apr 2005 18:23 GMT

Thanks gents - will try out your suggestions
Jerry

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