So, after playing around and trying to diagnose things, I started researching the fuel system online. Found a video that showed a bad fuel pressure regulator on a 240 and how to diagnose one. Smelled fuel in the hose that was connected to my intake manifold. Just got the new part from FCP Euro today...

Sprayed ether around the manifold gasket and virtually every hose I could find after the MAF. Used an entire bottle and nothing. No engine surge or change in how it idled. Attached that ground wire to the cover stud and nut and that fixed the engine interference that I would hear when I had the AM r...

Thanks, will try that this weekend. I'll attach that ground strap to the one valve cover bolt to see if that does anything as well. Couldn't find any vacuum leaks with the hoses. This is a 31-year old car that I've owned for three years. I only know the stuff that I replaced pretty much, so it could...

https://cimg4.ibsrv.net/gimg/volvoforums.com-vbulletin/2000x1124/80-20171117_125402_ae207b39cf06cd70d3e925e98a89aac6fef85e1b.jpg Could this old wire connecting to the coolant temp sensor be causing it to run rich? https://cimg6.ibsrv.net/gimg/volvoforums.com-vbulletin/2000x1124/80-20171117_125331_6...

Can hear a faint hissing somewhere, don't know what line. My guess is the little piece where two hoses (one large before the TB and one small after on the manifold) come together on a piece that connects to the engine block on cylinder No. 3. Any idea what that could be?

I've been trying to figure out what is wrong with my 1986 Volvo 740 GLE with the B230F with the M46 gearbox. So, it would always misfire in the rain until it warmed up. Ran like that during some heavy rain for a few days, then it was dry. During start up it would idle around 1.1K and the revs would ...