Club 80-90 Forums

Hi everyone.

I have only had my van a relatively short time. When we first got the van we knew that it had a flat spot when driving. My father-in-law who is a retired mechanic and has previously owned a T25 said he thought it was a petrol issue and said a clean of the carb may well fix it.

Well we dove the van for a week or so and then it got worse, stalling at junctions at low revs, even back firing and the loss of power was much worse.

So we cleaned out the carb and one of the jets did seem partially blocked. A little bit of tinkering with idle speeds and it seemed totally fine for a while.

We also did a few other things, replacing insulated hoses, air filter, fuel filter, oil change, filter change and a new temp gauge sensor. I know some of these will be unrelated but thought it best to let you know what I have done to it so far.

After a while the flat spots came back and today we had the same issue, a bigger loss of power, stalling at junctions and a little bit of back firing. I stopped for about 10 minutes and got back in and the van drove pretty well. I put more petrol in as it was a little low and now seems fine.

There is a bit of a smell of petrol outside the van. Always has been.

I did wonder whether the problem could be water in the petrol?

Now I know that if this is happening it could be coming from many places including the top of the petrol tank if it is corroded.

However, not sure how I have not noticed this before but take a look at this...



This is the tube that connects to the petrol filler socket. You can clearly see there is a big hole and in fact it is not even connected. It appears to be part of the filler socket (for want of the correct name!) that is the problem. The tube that goes down on to the tank appears fine.

Water would definitely get in when driving as the wheel would throw it right up there.

So my questions are...

1) Do you think this could be causing the problem? Letting water in and having this effect?
2) Anyone know what part I need to order and where to get it from?

Many thanks,
Andy

Also don't know if it will be relevant or not but the van has a third party petrol cap fitted.
Andy

1) Yes
2) http://www.brickwerks.co.uk/index.php/t ... er-t3.html" onclick="window.open(this.href);return false;

I think that's the part you need.

Brilliant. Thank you so much.

Oh I guess I should run the petrol right out of it?

Until it backfires and stops and then put fresh petrol in when it's repaired? or do I need to manually pump petrol out?

Thank you.
Andy

Yeah I was kind of hoping that wasn't the case but I think I'll try this (cheaper) route first. Thank you.

Sorry mate.I deleted my reply after realising you are aware it could be a hole in the top of the tank.

Shotage wrote:Oh I guess I should run the petrol right out of it?

Until it backfires and stops and then put fresh petrol in when it's repaired? or do I need to manually pump petrol out?

Thank you.
Andy

just remove the filter it will have to be changed anyway.
the water will run out as it sits under the petrol.

Thanks.

Is that because water partially blocks the fuel filter?

Ha, only put a new on about 2 weeks ago! But will replace if needed.

Thanks,
Andy

Yes it does
You'll have to clean out the floatbowl too.
The water will cause some oxidation to any steel/alloy part that does not normaly come into contact with water.
Like in the tank, pump, or any steel joint.
So there may be problems with fueling at some point in the near future due to debris.
easier to change a little filter than remove a carb