Technical 1.9 diesel engine/tank problem

[disastermaster]

Hi, I have a 2002 diesel 1.9 nonturbo punto van. I've had it a couple of years now without any major hiccups. It has now developed two problems which could be related or maybe not.....
Firstly about 3 months ago I went to refill the fuel tank and could only fill the tank roughly a quarter full before the fuel was overspilling out of the neck of the filler. At first I thought the fuel gauge was faulty, but it wasnt. Also when filling the tank it would take me about 5 minutes to get the quarter of fuel in. This has happened repeatedly since then. But on two ocassions I have been able to get a full tanks worth of fuel into the tank.

Secondly and more important, about two weeks ago after refilling my quarter of a tank, the engine developed a very rough idle, this also affects the engine on low revs throughout all the gear ranges. I have to keep it well revved untill I get into 5th gear. Once in 5th it will maintain 70/80 mph with no problem but if I let the revs drop in each gear it "chugs like mad" untill I drop down a gear or increase the revs.

I hope someone can help before I have to take it to a garage.

cheers for now

 

[disastermaster]

come on guys, any help here!

 

[a1ant]

Hi mate,

Check the tank breather pipe isnt blocked. A build up of air in the tank whilst refuelling will make it very difficult to get much diesel into the tank.

A blocked tank breather can also cause the other problem you are experiencing, ie rough idle/ lack of bottom end power.

Hope that helps,
Alan

 

[smokeme]

I had the same problem, it's the fuel tank vent

https://www.fiatforum.com/punto/172830-punto-stuttering-light-throttle-2.html?p=2077699

 

[disastermaster]

Thanks for the info guys, sorry for my slow response, I've only just got back from my hols! Whereabouts is the non return valve situated ? Is it a relatively easy job for a mechanically minder person?

cheers Disastermaster

 

[smokeme]

Problem solved!

https://www.fiatforum.com/punto/20028...-solution.html

thanks button please