CIS Problem

[rizov_d at shaw.ca]

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I would suggest:

Open the boot and check for free play of the metering plate. Clean around the
plate. Check for proper position of the plate.

If the piston is stuck perform fuel purge:

- Lubro Moly Jectron Cleaner and Ventil Sauber together into 3-5 l of gas in
the tank(this is the commercial concetration). Operate ~20- 30 min from idle
up to 3k rpm.

Do not drive the car.

 Leave to soak for 2-3 h and run again for 10 min.

Dobby

86 4kq

----- Original Message -----

From: Erik Addy <erikaddy at yahoo.com>

Date: Thursday, March 20, 2003 7:41 pm

Subject: CIS Problem

> Ok, I still have a problem with my 89 200tq. If it's
> cold out, it starts right away, but dies immedietly.
> After a couple attempts, it will keep running with
> some throttle applied. But you have to be real easy
> on it untill it warms up, or it will buck, etc. If
> its been run and parked (hot start), it cranks forever
> before starting. Sometimes after it starts, I hear
> something of a clunk from the front. I have checked
> the temp sensors, I think they are good. I have
> swaped warm up regulators, no change. ISV is good.
> Cold start valve works. I have a theory, which is
> probably bogus, but I'd like to see what you folks
> think.
>
> I think it starts fine cold, because the CSV is
> providing fuel. I think it dies because the fuel
> metering head is sticking and not providing enough
> fuel to sustain running. I think it doesn't start hot
> because the CSV isn't providing fuel, and neither is
> the metering head.
>
> What do you think? Any easy way to check? Why would
> the metering plate not move freely? If it helps,
> sometimes it has a rythmic surging when cruising on a
> warmed up engine. When this is happening I can look
> at my aftermarket boost gauge and note a 2" pulsing of
> the manifold pressure.
>
> Thanks for any help,
> Erik
>
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