car wont start . need a diagnosis
Posted: Sun Mar 02, 2008 9:15 pm
I have a problem and my car won't start and think its an electrical problem. Seeing if anyone has insight to what could be causing the problem.
At first it was intermittent then over the weekend got worse and now won't start at all. It started when I was driving long distance and when I filled up it wouldn't turn back on. We tried for 10 minutes then magically it turned over instantly. That night it did it again and I had to wait longer but did work later. Then this went on for a day, getting longer and longer til it would start after shutting it off. Now its just off and won't start.
What's wrong is it seems the car isnt getting spark or fuel, but it cranks just fine and everything else seems in order. We thought it may be a bad fuel pump and swapped in a new one since the old one didn't seem to even prime when the car was turned over. We put a new one in and seemed fine and primed but the engine still didn't start. We then checked the fuel line right after the fuel filter and there was plenty of fuel so fuel was being pumped.
So we pulled 2 plugs to see if they were foiled dry, etc and to see if they were firing. When we pulled them they looked shot and looked to be missing their electrodes but didn't smell like gas or looked fouled. We then cranked the engine over and we didn't see any spark and didn't smell any gas being injected.
What could the problem be?
I did just finish a 5Mt swap Thursday but didn't mess with any electriconics. This shouldn't be effecting this but you never know.
At first it was intermittent then over the weekend got worse and now won't start at all. It started when I was driving long distance and when I filled up it wouldn't turn back on. We tried for 10 minutes then magically it turned over instantly. That night it did it again and I had to wait longer but did work later. Then this went on for a day, getting longer and longer til it would start after shutting it off. Now its just off and won't start.
What's wrong is it seems the car isnt getting spark or fuel, but it cranks just fine and everything else seems in order. We thought it may be a bad fuel pump and swapped in a new one since the old one didn't seem to even prime when the car was turned over. We put a new one in and seemed fine and primed but the engine still didn't start. We then checked the fuel line right after the fuel filter and there was plenty of fuel so fuel was being pumped.
So we pulled 2 plugs to see if they were foiled dry, etc and to see if they were firing. When we pulled them they looked shot and looked to be missing their electrodes but didn't smell like gas or looked fouled. We then cranked the engine over and we didn't see any spark and didn't smell any gas being injected.
What could the problem be?
I did just finish a 5Mt swap Thursday but didn't mess with any electriconics. This shouldn't be effecting this but you never know.