Turned engine with spark plugs out

Nov 27, 2003 6 Replies

Hi, Had the spark plugs out my old renault. Later on I went to take off the front wheels, while the car was in gear, and turned the engine. Can I just put my new spark plugs in and everything will be fine? Or do I need to adjust anything.



Regards Mark.


No harm done - just put them back in. What you've done is an accepted way of turning a FWD car's engine when setting tappets etc.

If you do this with a new car that's fitted with electronic ignition you can do damage to the ignition module. The lack of a ~1mm spark gap to earth means the voltage has to build to very high levels before it can jump or track to earth. This creates a high back EMF in the coil which can blow the electronic module's output transistor. If it tracks the path it makes is a weakness from then on.

-- Peter Hill Spamtrap reply domain as per NNTP-Posting-Host in header Can of worms - what every fisherman wants. Can of worms - what every PC owner gets!

Eh? Only if the ignition is on.....

Anthony Remove eight from email to reply.

As long as you didn't apply a pair of scissors to the cambelt, then all should be fine :-)

Peter

whenever I need to turn an engine over, I always remove the plugs it stops the compression building up and the engine turns over nice and easy :)

no [problems with it :)

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required