Hi

I have a NA and and have it for the past 6 years, this morning I started it and it fired first time as usual but cut out after 5 seconds. When I tried to restart, nothing, except for the engine turning over really quickly.

 

I haven't had a chance to look at it but having similar problems with other cars I'm thinking cam belt issues. The cam belt was replaced, with tensioners and water pump 4 years ago and the car has only done 10000 miles since then. It was only replaced due to a bolt working loose from a pulley so decided to have the lot replaced. the mechanic said I was lucky as the bottom crankshaft pulley was missing it's woodruff key at the time of the work. He, his words, struggled to purchase one, so he manufactured one to go in.

 

My thinking is cam belt failure or woodruff key failure.

 

Any ideas as I am gutted at loss, however temporary of the car. :(

 

Rob

Hi Rob ..

 

ok lets put the cam belt a side at this point

 

you need to start checking your connections

 

PTU and CAS if these are corroded or come off it will stop the car from starting

both of these items are on the front of the engine

 

check them and report bk to us

can you not get someone with a tourch and undo a bit of the cover and have a sneak to see if its turning whilst you turn it over then you can rule that out or is there a more simple way or checking

Turning over quickly doesnt sound good.Put the car in gear remove the oil filler cap and push the car gently,see if the cam moves.

Bottom pulley missing its key is bad but would not effect the cambelt timing, as jim said check cams are moving by looking through the oil cap. If you have been unlucky enough to have a snapped belt the chance of damage is unlikely, a slipped belt though is a different thing.

Jeff TT

lol nice one guys .. i didnt want to panic him to quickly

Thanks guys

 

Will try looking to see if cams are moving whilst in gear tomorrow. Wife is at work and got no one near me to help. Will also check PTU and CAS, will let you know tomorrow

 

Rob

lol nice one guys .. i didnt want to panic him to quickly

 

He said it winds over really fast Mark,which usually indicates compression loss in my experience,hopefully its not what it sounds like but after he said hes had other belt issues....

Hi

I have checked a few things over, the cam is turning over, the connections on the CAS and PTU are ok, I removed a coilpack and plug and got a good spark, there is a strong petrol smell after cranking so assume petrol is getting through.

 

Any other ideas?

 

Jimmer, how do you lose compression? on all 6 cylinders? They were all checked at time of cambelt change and all between 165 - 170 psi, oil and filter regularly changed etc

 

Rob

Hi

 

Also when I turned her over, she fired once and that was it

If I was you I would spend £20 on a compression tester and give your engine a check (make

sure you have a fully charged battery tho)

Remove the fuel pump fuse from the small fuse box on the drivers side of the engine bay( think is the large Blue one, am sure someone on here will confirm which one it is)

If you've been trying to start it and its not starting then the fuel may of washed the bores down giving slightly less compression.

If you can't get a compression tester then you can put a very small amount of oil into each cylinder to raise the compression and if she starts first time but won't start again afterwards then that's a sign of bad compression.

Hope you can get it sorted pal.

Edited February 23, 201411 yr by davezx

not sure if this is the same issue but have a look just in case

http://www.300zx.co.uk/forums/showthread.php?155686-non-starting-z-(newbie)

Spartan - you are a star, absolute star, it worked a treat, just got back from a run in it now no problems.

 

What causes this problem, overfuelling? how?

 

Rob

not sure why this happens m8, think the engine pumps in more fuel at startup and if you stall it floods the system. glad ur all fixed :)