problems getting 13b running after rebuild

[BarryB]

Hi again,
After a much longer interval than hoped, the car is all rebuilt!
The engine starts readily but wont idle.
If I hold the revs up with the throttle and slowly back off, everything is fine until the revs drop below 1500, then at 1000 rpm it starts hunting between 1000-1500.
Dies as soon as I take my foot off the peddle.
any ideas chaps??
poor compression, still?
air leak on the inlet side somewhere?
or just needs setting up?

Barry

[Martiny]

Hi Barry.

Well done on doing all that work and getting this far. It is unfortunately, very easy to make a mistake like that. I once out the clutch plate in my wifes 323 the wrong way round, even though the plate had BIG red writing on it, saying "Gearbox side".  DOH!

I dont know what your current problem is, but at least its a different symptom now.

It could be air leaking in somewhere.

[grinder]

i had a similar problem with my EGI - it would run fine but hunt at low revs - found out that i hadnt put the oil cap back on  DOH !

sean has a similar problem ( i think ) try PM\'ing him and see what he thinks

[20B_boy]

Sounds like an air issue some where, one of the inlet gaskets? I think the BACV on the FD will give similar symptons if not working properly maybe??

[BarryB]

Hi guys and thanks for the replies so far,
Done a few checks,
can rule out compression as a problem, both rotors seem to give good results,
did a resistance check on the BACV, fine
did a crude pressure check of the inlet, ie blocked off the main air intake and blew down another hose! got a good feeling of pressure and no sounds of escaping air, but maybe that test is just worthless
how much of a leak does it take to stop low revs and idling?
I dunno!
I\'m finding it hard to determine what should be active during idle and what is dormant so that I can exclude it from consideration.
f\'rinstance, which jets supply gas at idle?
is the airflow meter involved at idle?
why is the Haynes manual;
a) only available for the US versions
b) useless at describing how things are suposed to work

ah well tomorrows another day
later peeps

[BarryB]

its not looking good
presumably water in the oil doesnt help:(

or could this be another problem?
could the engine start and rev ok but not idle with water present in the oil?

[grinder]

yeah water in the oil isnt a good sign

i had the white stuff round the filler neck - but put that down to short runs and the time of year

are your getting white stuff on the dipstick ?

[Wav]

How much water is in the oil exactly??? Could be just condensation if the engine has been stood for a while.

With respect to your idling/running problem, did you remember to put the injector diffusers back in? as that can cause the car to stuter overfuel and then stall repeatedly.

Best of luck with sorting it,

Paul:)

[BarryB]

thanks for the replies guys,

we\'re talking about lots of water in the oil:(
drained it last night, like chocolate milkshake
guess thats why the cooling system needed topping up!
so I\'m right back to square one, needing to take the sodding lump out again

[grinder]

just think how little time it will take you !!!

[BarryB]

yeah! might be able to halve the time now!
only four months! :/
wonder what I\'ll f**k up this time?