1986 volvo 240DL wagon( rough idle etc) after a tune up

RichyRich514 · Post by **RichyRich514** » 01 Nov 2007, 11:25

so basically i changed the spark plugs, spark plug wires, distributor cap+rotor on my 1986 volvo 240 DL wagon.

so after all that is changed i go to start the car which it starts perfectly fine ''sounds'' better then before! i go to give it a bit of gas and it wants to stall then gets rough for a little bit then goes back to normal but keep in mind im still in park, theres are also some small back fires not loud just like a small''Poof''

im thinking maybe another vaccum leak ...because prior to this tune up there was a leak from the hose in front of the brake booster which made it run really rough which is now fixed of course. or the gapping of the spark plugs ?!

thanks in advance

Richy

RichyRich514 · Post by **RichyRich514** » 01 Nov 2007, 18:11

could it be the fuel filter?
idle adjustment got touched while under the hood ?
gapping of the spark plus 0.028?

tripleb · Post by **tripleb** » 01 Nov 2007, 20:30

You should check the fuel pressure, but I wouldn't replace the fuel filter for this problem, but it's good to replace at the normal maintenance interval or if the fuel pumps are replaced.

It sounds like a vacuum leak, fuel pressure problem, or a bad MAF (Mass Airflow Sensor).

Make sure the connection at the MAF is ok. The terminals get corroded and spread apart and can be a problem. Also make sure the air cleaner thermostat is not stuck open, possible burning out the MAF.

It's unlikely the idle setting, but the throttle body needs to be set up correctly or you can have idle problems.

B

RichyRich514 · Post by **RichyRich514** » 01 Nov 2007, 21:20

i just find it so werid that right before the tune up it was running fine! i just replaced parts and started it up and its messed up ! ah well its what we gotta live with having a 20 year+ old car

tripleb · Post by **tripleb** » 01 Nov 2007, 21:40

Sorry, I made the assumption that's why you replaced those parts.

It sounds like you have a misfire in the ignition system. Double check that the cap, rotor and wires are installed correctly.

If you have the wires mixed up, it could cause this. You can swap the old parts back in one at a time to see if the problem goes away.

Good Luck

B

RichyRich514 · Post by **RichyRich514** » 02 Nov 2007, 09:31

at first i had the wires in the wrong sequence which was running even worse then now thats fixed. so im guessing its the rotor. ill put the old one back in and see what happens. is the same problem persists well im going to think its a vaccum leak.

RichyRich514 · Post by **RichyRich514** » 02 Nov 2007, 11:12

i think i found the problem!

i opened up the distributor to change back the rotor and i noticed some broken plastic peces along with a small spring that were loose inside the distributor ! so im guessing this is the problem...!

RichyRich514 · Post by **RichyRich514** » 10 Nov 2007, 11:51

i replaced the distributor and the probem still persists !! so is it the MAF? its like almost a missfire or just a rough idle ! HELPP!!!

tripleb · Post by **tripleb** » 10 Nov 2007, 12:20

It's hard to know what your symptom is. Misfire, rough running? There are many things that can cause either.

Can you say for sure that the problem started only after you replaced the ignition parts?

Have you checked for trouble codes?

B

RichyRich514 · Post by **RichyRich514** » 10 Nov 2007, 12:29

im simply replaced the spark plugs + wires cap rotor and distributor ...then this problem arrose ....

ill start the car now it will be a bit rough then i give a bit of gas and it gets rly rough more gas and it seems to go away but then has a knocking sound ?

im out of ideas what it can be

i didnt space the new spark plugs but that cant be the problem ?

ill try to get a video clip .