Hi, I have started a new discussion on this issue as this discussion got a bit confusing. Trying to figure out if I can close this. My problem is unresolved but please refer to my new discussion for comments. Thanks, Tracey
Hi.. again. This time I am here with a question on my older Volvo. Yes, I like these cars!!
My old girl has had a bit of a fuel problem for a while now. At one point she wouldn't start at all.
We have done the following:-
This lot done when she wouldn't start
Won't start. Previously, cold start sluggish but once started ok on restarts. Then suddenly no start, engine turns over. Endeavouring to start for approx a week but today not even that. Checked fuel, ignition, spark (plugs & distributor cap 2,000 - 3,000 klms old - replaced when this last happened), did OBD diagnostic test (result 1-1-1), checked air filter, replaced temperature gauge sensor (knew this had to be done anyway), timing belt ok, checked mass air flow sensor by unplugging - vehicle did not start. Tried to start without the air cleaner - still nothing. Checked one spark plug - orange spark exists but maybe a bit weak. Disconnected fuel line, turned ignition on, fuel poured out. Cleaned and checked the 25A blade fuse and all the other fuses.
New Distributor Cap, Leads and Spark plugs resolved the no start situation beautifully.
We also replaced the Fuel Pressure Gauge.
After roughly 1000klms, she started running really rough again and is running rich. We are in the process of getting a new air filter (live in the bush so everything takes time) even though it looks ok.
Do you have any other ideas that might help me out?
Thank you once again,
P.S. I will be quite an expert myself before too long! It is a joy to fix them up and have them running well again. With our other cars being 4wd's, I just love driving the Volvo's.
Sounds like a couple of leaky injectors.
Hmmm. that doesn't sound good.
Ideally, pull the set and get them sent away to be refurbished but, wait until others chime in as I am not 100% this is what is going on or on how to test injectors.
Interesting about injectors , worth Google a look to see if its common though. What about the IAC valve , idle air control valve , its just in front of the accelerator cable pulley at the throttle body , has some rubber tubes and an electrical cable , pull it out , it should sound like a knocking noise as you flip it / shake it , it needs cleaning out with carb cleaner till it moves freely then plug it back in.Could well be the MAS going bad too , it goes into limp mode , unplugged it should start unless flooded ....
Hi Les, We have googled the IAC valve online to see what it looks like and can't find one in our car. The car does start now but it is running really rough and you can smell petrol. Thanks, Tracey
What year /model ?
240 gl 1989.
Ahh , sorry , i was thinking 850 despite the tiltle at the top !! Ask again? Plenty of peeps here should be able to help.
Could be injector rubbber seals as @egads suggested. You can buy them and do it yorself or get some refurbed/ cleaned ones from someone , maybe on here , ask the Bruce's. Les.
Bump , anyone got an idea?
Not sure on the safe way to check for leaky injector seals. Maybe check for fouled spark plugs and if 1 or 2 are fouled then go for injector fix goodness?
Pull them if it easy to get to. It should be obvious if rubber is toast . Shouldn't be hard to get new from many places.Local even?
Where are you from? Repco was able to order the correct injector O rings for me in the past. How do the new spark plugs look? Black with carbon/fouled up?
Also I assume you replaced the fuel pressure regulator, not a fuel pressure gauge?
After cranking for a while and not starting, are the plugs wet with fuel?
Busy trying to fix the aircon on the other car right now. Will get back to this in a few days time. Thanks for all your tips. Yes, regulator, not guage... Car does start now but runs rough. Will check spark plugs later but think they are getting all dirty again. If I change them, I expect it to run beautifully again for a while. Anyway, can't do it right now so will let you all know again when my head is back on this car. Much appreciated, Tracey