Seems to me it must be either blocked fuel flow or ignition. I'd appreciate
ideas.
It actually behaves as if the engine has flooded, but I don't know how that
can happen when it is running.
Thanks
Clearly an engine management problem. Cold start device is holding on due to
failure of engine temperature sensor.
Then again, it could be an electrical component that's playing up when it
gets warm.
One of the few times it's probably worth paying for a diagnostic test.
DaveK.
Could be carb icing. Check the hot air flow to the carb (assuming it has
one)
John
What the hell are you on? An H reg Nissan- engine management?! Come on...!!!
Carb icing, Carb icing, Carb icing, Carb icing. End of story.
The end; it's mini adventure.
Tim..
What the hell are you on? An H reg Nissan- engine management?! Come on...!!!
> > Carb icing, Carb icing, Carb icing, Carb icing. End of story.
> > The end; it's mini adventure.
> > Tim..
Thanks for the input.
I'm actually on about 1990 Nissan Bluebird 1.8.
Original Manufacturers Equipment:- Engine management ecu, Part Number: A18
000 C33.
Temperature Sender/Sensor: Bosch 0 280 130 023.
Of course it could a blocked fuel pipe, or choked breather on fuel tank, or
ignition leads or 'carb icing'.
DaveK.
Thanks for all the feedback, chaps.
I'll check the hot air feed to the carburettor; certainly carb icing would
explain the symptoms, and also why it only seems to happen when the weather
is cold.
I must say I'm surprised a 1990 Bluebird has anything as sophisticated as an
ECU, but there you go.
I don't think its the ignition leads, as I'd expect it then to have problems
starting, and it doesn't; why would such a problem only manifest when the
engine is hot? and why would it go away after resting the engine a few
minutes?
Could be a temp/choke problem, except I checked the choke and it all seems
to be working as expected - the flap is open initially and closes as the
engine warms up, as it should (closes a bit too soon, actually, but that's
another problem, though one that I can live with).
There may be a float bowl drain plug you can try - you may get lucky and lose
the muck when the petrol is dumped. The best permanent cure is to fit an extra
fuel filter in the petrol feed just prior to the carb.
Your minor choke flap problem may be fixed by rotating the bimetallic strip
heater slightly, there's 2 locking screws to slacken a little then the whole
shebang rotates. A few degrees rotation should do the trick, you'll have to
work out which way to turn it by watching the choke flap.
Back to your main problem, another possibility is the ignition coil, if they're
on the way out they tend to get worse after a few minutes of current flowing
through them.
"Steve Burt" <steve...@spamfree.tiscali.co.uk> wrote in message
news:3fe3085f$0$9387$ed9e...@reading.news.pipex.net...
Do you have an ECU under the front seat? If so it may have blink
codes that can be read out. all you will need is a Haynes manual, a
phillips screwdriver and a plane blade screw driver. The stored codes
should give you some idea of where the problem is.
> What the hell are you on? An H reg Nissan- engine management?! Come
on...!!!
>
I had a problem with an E reg (87) Bluebird, it detects the roadspeed via
the Speedo,and adjust the idle speed . I thought it was too old for that,but
them Nissan peeps are clever! Maybe not hi-tec engine management but still
engine management.
No, there's no ECU in my car.
Only the Turbo and fuel injection models have an ECU.
Mine just uses old fashioned mechanical stuff.
I had a fiddle around at the weekend - I think the problem may have been
due to the hose which delivers the hot air having a split in it - I've fixed
that, and resited the hose so that it is taking hot air from the manifold.
Also loosened the valve which admits the hot air to the system - flipped it
up and down a few time vigorously in case it was sticking.
Problem hasn't re-occurred, but it has got warmer, so it may still happen
again when we get a really cold morning; fingers crossed.
10-1 you've found the fault, and effectively fixed it :)
Happy Christmas
Tim..
Thanks for the input.
I'm actually on about 1990 Nissan Bluebird 1.8. Original Manufacturers
Equipment:- Engine management ecu, Part
Number: A18 000 C33. Temperature Sender/Sensor: Bosch 0 280 130 023.
Of course it could a blocked fuel pipe, or choked breather on fuel
tank,or ignition leads or 'carb icing'.
10-1 you've found the fault, and effectively fixed it :)
> > Happy Christmas
> > Tim..
Not engine management system or temperature sensor then (as we are told that
the car is without such devices).
DaveK.
It has temperature sensors all over the place, but no engine management.
Problem re-occurred this morning, so I've not fixed it.
Looks like either the temp sensor inside the air filter, or the vacuum
driven valve which lets hot air in have failed.
Probably the latter; now to try and track down spare parts.....
Well you can test that by sucking very hard.