It won't start

[monsterob]

im having similar troubles with a much simpler engine matie dont worry you will get there in the end.

anyone know about 70's outboard motors?

[brainbug007]

Came across this and it seems to have some good info http://www.classic-car-magazine.co.u...intenance.html sounds like part of my problem may be bad connections as the battery terminal wires do get warm after attempting to start which would indicate bad earths? I'm guessing having painted my engine & gearbox this is probly interferring too much? Also for my body earth point (battery->body & engine->body) I've just fitted a rivnut which I bolt the straps onto, is this sufficent for a decent earth?

[twinturbo]

I don't think a rivnut will be a good idea, there will be corrosion between the two dissimilar metals that will lead to a poor earth over time.

TT

[brainbug007]

So what would you recommend for doing the body earth?

[davedew]

For all my earths I welded on M6 bolts to the chassis where I needed them. I think I put something like 6 on in total. Just grind the writing off the top of the bolt head first to make sure you get a good contact patch against the chassis member.

[adrianreeve]

Should be ok if you use a smear of copper grease on the bolt.

Cheers

Adrian

[brainbug007]

Ok that's a good idea, thanks guys

[robo]

Originally Posted by davedew

For all my earths I welded on M6 bolts to the chassis where I needed them. I think I put something like 6 on in total. Just grind the writing off the top of the bolt head first to make sure you get a good contact patch against the chassis member.

I do the same and also put a cotton reel in the engine bay to dump all the live battery connections to.http://t1.gstatic.com/images?q=tbn:A...HYXgDghN9spYKw Keeps all the piles of lives and after thoughts in one place and insulated at the same time.

Bob

[brainbug007]

Right I had a go at this again tonight, still no joy. I sorted all the earths out by taking all the paint off and welding a bolt onto the chassis as recommended. I took the starter off and tested it as well. I turned round by hand fine & I connected it to the battery on its own and it spun round no problem. I still however can't crank the engine by hand, like it's still stuck on something? I tried draining most of the oil out to see if that might help but nothing

[robo]

Try and turn the engine anti clock by hand or with a socket on the crank. If it goes 180 degrees and stops there must be something in one of the combustion chambers.

Bob