Newbie needs help

[Adexter]

Hope you guys can help me
I own a passat 18se x reg, every now and then i go to start my car but it justs turns over and wont start up, then about a hour later i try again and it starts, but now it seems to take days before it decides it want to start. I have had it on fault reader and its saying no faults. Thanks

Moderator edit - Moved from Forum Improvement Section

[portovechios]

Has it been serviced recently?

Might just need filter service and a good blast through with an additive.

[Sinspeed]

Agreed, clean the plugs check your oil/water to make sure they're not mixing ie headgasket


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[Sinspeed]

And check for good spark


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[Adexter]

Has it been serviced recently?

Might just need filter service and a good blast through with an additive.

Its had oil change and that but im not sure about spark plugs so il check them, what additive shall i use and thanks for all your help

[portovechios]

Search on here but i use redex and don't spare the horses

Def change fuel filter and air filter unless you know its been done in the last 20k

[Adexter]

Ive also noticed that my revs keep going up and down whilst stood still on tic over ive put new plugs in and red ex

[portovechios]

Give the redex a few days to clear through.

Look to be getting a decent service and ask them to plug it in and or have a look

I had similar issues and was a new cam sensor and crankshaft sensor that solved ot