00 s80 won't start

dear1700 · Post by **dear1700** » 08 Feb 2015, 13:39

Recently changed thermostat and now car won't start. Nothing has been disconnected except coolantbottle sensor. I checked codes witch obd2 scanner and there are non. I have spark, fuel pump runs, and cranks over normally. Just doesn't hit even once. I checked pickups on both crank and cam cleaned them up and reinstalled, no difference.

Any ideas?

Post by **regent** » 08 Feb 2015, 14:04

Double-check for spark, if yes - then I would suspect the Lawn Mower Syndrome (loss of compression)
Pour a tablespoonful of engine oil into each cylinder, make sure the plugs are clean and dry before re-fitting them, and she'll start.

dear1700 · Post by **dear1700** » 08 Feb 2015, 14:07

I actually thought it was bad plugs causing the no start condition so I installed new ones today still nothing. They were clean and dry when installed. Old ones were excessively worn

Post by **regent** » 09 Feb 2015, 07:35

Were the ones that you took out wet?
1. If not, then you have a fuel-related problem: check fuel pressure at the rail and verify injectors are 'pulsing'. There is a nice No Start Troubleshooting guide with a video on youtube by our forum member rspi - you want to look into that one for help as well.
2. If you did see wet plugs, then you could be losing compression (like I previously mentioned) due to the accumulation of unburned liquid gas which washes down the oil film from the piston rings and bores. This is a common mishap after so many repeated cold start/no start events and can be fixed very easily by dribbling some oil into the bores before putting the plugs back in.