Shakey running cutting out on 1.7

[cheshire190e]

Hi. i own a 1.7 340. it was running fine up until about a week ago when i ran out of petrol. since then the car can drive normally but then sometimes just kangaroo for a while and then cut out as if its getting no fuel.

i think it is getting fuel because the inline filter is full. im not 100% on this but it also seems to happen only when the car gets up to temperature.

what i have to do is sit at the side of the road for 5 mins then it will start up again fine and then drive ok for a mile or so then i have to do it again.

any help would be great as its really annoying

cheers

Matt

[Chris_C]

Sounds like one of the carb to manifold (or carb to air filter) bolts is loose to me mate, have a check of those.

[cheshire190e]

cheers chris ill have a check

[jtbo]

Did 1.7 have filter also in fuel tank like 360 has?

My guess is that as problems did start after running out of fuel, there is some dirt in that filter or then in fuel pipe.

One possible fix could be that you run compressed air to fuel pipe from engine bay so that if there is something that clogs pipe, it would come out.

Another place is fuel tank ventilation, it can cause some weird effects, but I fail to see how that would get clogged, anyway test for that is to drive car with fuel tank cap open.

Of course if inline filter has passed some dirt to carb that can be problem, carb has also filter, it is in fuel hose connector, you need to unscrew that and filter is right there, just be careful and install it correct way back, there should not be resistance when screwing connector back in, if there is filter is installed wrong way (talking from experience here ).

It is those if problems started after running out of petrol, but better check also those what Chris_C tells as it is quite common fault too, just be careful not to overtighten bolts, carb is made from very soft alloy of some sort and if you tighten bolts so that they will hold for sure, it is warping base of carb, tightening torque for those was something ridiculously low, so use only fingers, not wrist

[Vart]

i seem to recall a filter on the end of the petrol gauge sender, fuel line and float device in the fuel tank of a 1.4. what with both 1.4s and 1.7s having a 10 gallon tank and instruments i guess that filter is probably still there. easy enough to remove. unscrew cap from middle of the boot floor and detach fuel lines and the whole thing just turns and comes out. i guess a clean with white spirit or similar can't hurt. would explain why the inline is fine but as gsf charge about a pittance for a replacement might be worth a new one anyway.

[cheshire190e]

cheers ill try that now

[pettaw]

The sludge has probably been brought right through to the carb and blocked something. Its worth taking the float chamber cover off and give the jets a good blow through with some carby cleaner.

[guyandrewdawson]

My 340 would be fine for weeks, then suddenly it would cut out, usually following a bit of 'spiritted' manuovering. Once stopped, it simply would not start unless left alone for 5 minutes or so, then it would start as if nothing had happened.

Over the months i checked for sludge in the tank, changed the inline filter etc. Finally I caved and stripped the carb'. Inside I found a small cylindrical filter, 12 x 5 mm, inside of which was a grain of muck.

Once the muck was removed, the problem never recurred. I assume it quite happily lived at the bottom of it's little home, unless disturbed by my enthusiatic cornering, at which point the flow of fuel lodged it somewhere vital. I guess that leaving it to stand allowed the pressure to back off and it settled back where it was.

Can't promise you have the same problem, but it seems very similar.