hesitating 340

[silvia]

when i put my foot down in my volvo 340 1.7 there is a slight delay befor the power comes on. i presume i need to adjust the carb but im not altogether sure what i have to adjust? i may make it run worst than it does now. everything els seems fine and its ownly been doing it for a couple of days.

thanks for any help

regardes
matt

[niloc]

I wonder if one of the jets is blocked - the one that puts in an extra squirt when you throttle.

[silvia]

thats what someone els said it could be on another volvo forum. how do i check and if it is how do i clean it out?

many thanks
matt

[stevo48]

you could try spraying carb cleaner into the carburetter itself with engine running or try some injector cleaner in your petrol tank, if they don't work you will have to remove the carb and carefully strip it down and clean the jets out.

[silvia]

i have had the carb off before but never striped one but i think i could do that if needed but i will try the easyer options first

thanks for the help

[stevo48]

Originally Posted by silvia

i have had the carb off before but never striped one but i think i could do that if needed but i will try the easyer options first

thanks for the help

Try the easy options if they don't work remove the carb then carefully strip it down, take your time, use good clean close fitting screw drivers when removing the jets, you will also need new gaskets.
Work on a clean flat surface(i used to use a table covered with paper) and don't be tempted to over tighten anything when you put it back together, the brass jets can strip their threads easily.

[Clan]

i would go for the accelerator pump jet being loose and flooding the engine when you put your foot down has fuel economy suddenly got worse? take the air filter off and look down teh carb whilst you open the throttle is there a nice fine jet that sprays down the barrel or is there a flood of petrol everywhere?

[silvia]

the car smells of petrol now. when i had my old carb on it smelt of petrol and i put a better one on and it didnt smell atall and was so much cheeper to run but now i can smell petrol agen but i wouldnt say it was alot more expensive to run, or i havent notticed.

[Clan]

Well hav e a look down the carb and see which description above is happening .... a neglected 340 is likely to have the pump jet nut loose

[silvia]

i have put some stp carb cleaner in the tank so i will see how it gets on and post up if no chaing.

many thanks
matt