please help!!! i can't get my 1.7 running right

Post by **cheshire190e** » 26 May 2008 08:48 pm

Hi everyone, ive owned my volvo 340 for about 3 months. ever since i got it it has had a eratic idle.

sometimes it will drive and work fine and idle bang on 1k but then other times it can be idling at virtually 0 and i have to run with the choke pulled out.

I have tried many times to try and get it running right but it just isnt working. Ive put a new idle solenoid on. someone said they should click when the ignition is turned on.

i hear no clicking, is there a particular way your meant to test this?
ive also made sure all the hoses are tight around the carb.

i initially thought the idle screw may just be coming loose over time but then sometimes it will be cutting out but then be fine later, so that rules that out.

under the idle solenoid there is another spade connection with no wire going to this, its at the base of the carb. should there be a wire to this? my car is a 1.7 1987 340

the guy before me had trouble with the carb and fitted a different carb. the floats were the problem initially.

what do you think the problem could be. it doesnt matter wether its hot or cold its still the same. sometimes works fine and then suddenly the revs can drop really low so i have to drive with the choke on.

im getting really fed up with it but love the car so want to get it working.

it seems pretty lumpy too, where abouts is the idle mixture screw. i couldnt see it when i adjusted the idle speed.

id appreciate any advice you can give me = D

sorry about the mass of text

Post by **germ** » 27 May 2008 04:44 pm

ok, fuel lines are they totally clear?

dist cap can get oil in it and mess the running up,

have you checked renix readings?

other than that the carb coulb be fubard/warped.

Cheers
will

Post by **cheshire190e** » 27 May 2008 04:57 pm

how would icheck the renix readings?

ill check the dizzy cap tongiht, i am thinking it is probably carb issues but not sure what to check, the guywho had it before me replaced the carb, its not the same model that was on originally could this be causing the running problems?

Post by **germ** » 27 May 2008 04:57 pm

ohh yea idle mixture screw is near the base.. from drivers side looking into engine bay the bit of the carb facing the front of car, there is a little hole that a small screw driver fits in, now that screw could have fallen out in which case that explains your problems.

The way to adjust this is to tighten it up and untighten 2 turns that should sort it out, fine tuning: turn it about half a turn either way(slowly) to get a smooth idle, it sometimes takes a few seconds for the adjustment to take affect. (time to even mixture out)

Post by **germ** » 27 May 2008 04:59 pm

renix readings i cant help with as ive lost my haynes manual and thats how i did it.

but iam sure some one with far more brain power will post some info!

Post by **germ** » 27 May 2008 05:01 pm

lol sry for posting so many times

is it a weber carb? or a solex off a 400 volvo?

Post by **cheshire190e** » 27 May 2008 06:31 pm

im not quite sure what its from, its a solex but it has 2 breather pipes coming from the top of the carb not one like the standard carb.