ignition sparks but won't start. 1990 740 turbo

nwpinot · Post by **nwpinot** » 10 Sep 2008, 16:34

180K 740 wagon began to start hard on two successive occasions, now it won't start.

It has spark. Is there a quick and dirty way to check for fuel?

I'm wondering if it's a fuel pressure problem. If so, are there two pumps? (one feed and one high pressure) or, is there just one?

I have a generic fuel pressure guage. Where is the fuel port? What should the operating pressure be?

Thanks all for the suggestions!

Post by **billofdurham** » 11 Sep 2008, 12:27

Welcome to Matthew's Volvo Site.

Before going all technical with ways to check fuel pressure try flicking the fuel pump relay with your finger. It is a fairly common problem on these cars. If it now starts you should replace the relay.

On your car you have an on-board diagnostic unit which you can use to check for any fault codes that have been set.

See: https://www.matthewsvolvosite.com/chat/p ... c&start=12 for location and use. Ignore the heading as it relates to your car as well.

If you are still having problems post back.

Bill.

nwpinot · Post by **nwpinot** » 12 Sep 2008, 10:05

Thank you very much for the education. cj