Re: Cleaning EGR Valve...


"Tom Burton" <thomasburton7@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:6mbrafFg931oU1@xxxxxxxxxxxxxxxxxxxxx
Hi

Vauxhall Combo 1.6 Petrol/LPG.

The old EGR problem again, R.E. my old posting, I've had the new exhaust
fitted and the MIL light is back on following resetting. Reading the codes
by pressing brake & Throttle and putting the ignition on indicates 0400
which is one of many codes for the dreaded EGR faults.


A fault code does not always show which part is faulty, it indicates what
could be a number of faults.
I had a fault code which took a main dealer 3 days to fix, they had
everything
apart from the turbo, exhaust and intercooler. It turned out to be the MAF
sensor. It wasn't registering how much air was flowing, so injecting too
much
fuel - the emission sensor was reporting this as a fault. It pointed at the
EGR
valve at first.
It took a proper mechanic, not a fault code reader to diagnose and repair
it with a £200 part.

Symptoms indicate that the EGR is doing weird things too, so, before i
dashed out and bought a new one i thought that id give it a clean, so i
whipped it off and expected to find lots of gubbins that i could clean.

But i could only find one hole underneath, and one that was seemingly
closed - presumably the valve bit!


You're wasting your time.

Gentle prodding pulling and probing couldn't persuade the valve to open so
I gave the flange and the open hole a squirt and wash with some carb
cleaner and whacked it back on, unsurprisingly it is still malfunctioning.

So before i trouble autovaux for a new Valve am i missing something? I
couldn't find any non-destructive ways of dismantling the thing. Has
anyone else had any success?


You will kick yourself when you find it isn't the fault.


Thanks Again

Tom


P.S. This Engine uses the double electrode spark plugs, which a bloke in
the factors was telling me have been known to drop the centre electrode
into the cylinder causing lots of excitement, he advised caution and
traditional single electrode plugs as "if the centre falls out of them,
thas bent electrode with catch it"


Do you know about the sort of pressures in a cylinder as your friend
doesn't!

Any comments?


don't replace parts that don't need to be.


.

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