2000 s40 misfire after changing spark plugs.

Jaerich76 · Post by **Jaerich76** » 09 May 2020, 23:16

Hello all, I own a 2000 s40 that ran fine before doing routine spark plug change, replaced them and car misfired bad. After double checking that I had cylinder 1 connected to 4 and 2 to 3, I replaced the plug wires and coils to no avail. Now the car wont even turn over. The fuel pump is working. I just don't know what to do next. Please help!

Post by **alschnertz** » 12 May 2020, 13:46

What kind of plugs did you use?
What did you gap them to?
If it ran before changing the plugs then it's likely something simple.

Check your coil connections - including the wires within the connectors.

"Now the car won't even turn over"
Does that mean no crank or no start?

Bodhi5 · Post by **Bodhi5** » 15 Jun 2020, 01:42

Hi, I just didn't NGK platinum plugs, got some rough firing. My right coil is connected to far left plug, n second coil on center right is connected to left middle plug.

I charged battery using new Canadian tire genius multi battery charger full, sanded both blue negative contact to engine, n frame under battery, n added a home 120 copper wire also from blue frame to any screw by the plugs for better grounding. Firing plugs. Now everything is smooth like new. Exhaust doesn't smell like gas.

Bodhi5 · Post by **Bodhi5** » 15 Jun 2020, 01:44

Battery and/ or alternator dead!