Thread: zOMG What have I done to her? :( Please help!

Find TDC on the front pulley and confirm it by sticking a small screw driver down no.1 spark plug hole and rocking the crank past TDC. Lift the dissy cap and see that the rotor is pointing at no.1 lead or 180 degrees the other way. Use a short piece of heater hose and try to blow into no.1 plug hole with the engine a few degrees before TDC. If air blows in you're 1 turn out from TDC, then turn the engine 1 turn clockwise. If air bounces back at you then it should be on the firing stroke. Look under the rotor button to the pickup and line up the nearest tooth of the the star rotor with the pickup. If you can't turn your dissy far enough to line up everything you may have skipped a tooth on the timing chain meaning front cover off.

Why would the timing jump ? I'd be concerned the dizzie drive also drives the oil pump (like it does in some engines).

Could a backfire damage the flapper? I think I've heard of this happening before? If so, anyone know what damage could be done? What sort of values should you get off one that is working if you stick a meter on it?

Yes ,as Gav suggests , i`d look at the flap movement and throttle plate/cable as a second .

If the flap doesn`t move there is no air movement which would give idle and no revs .

It would also go with no odd noises .

Advancing the timing if as done would up the idle .

It would still start and work to a point after the timing chain jumped a tooth , being what they are .

Originally Posted by PLR

Yes ,as Gav suggests , i`d look at the flap movement and throttle plate/cable as a second .

If the flap doesn`t move there is no air movement which would give idle and no revs .

It would also go with no odd noises .

Advancing the timing if as done would up the idle .

It would still start and work to a point after the timing chain jumped a tooth , being what they are .

I had a mechanic friend look at it and he reckons the dizzy is buggered.
I can't find any local at all, found one in Adelaide for $320


eBay are horrendously priced (I saw at least 2 in excess of $1200!!)


Anyone got a spare that I can buy or borrow? I have to get this back on the road as it's my daily driver


Cheers
Dave

Is a 3.5 carby one the same? If so, you're welcome to the one out of my 85 that's under my bench. Running when I pulled the motor out, condition otherwise unknown.

Originally Posted by Homestar

Is a 3.5 carby one the same? If so, you're welcome to the one out of my 85 that's under my bench. Running when I pulled the motor out, condition otherwise unknown.

I just you a huge PM then my computer farted and I lost the whole post.
I dunno if the SU dizzies are any different to the early EFI flapper one.


It's been running rich (*I knew that lol*) and plug #1 backed me up as it was black as coal!


I'm gonna take some pics of my dizzy and send them onto you, hopefully yours will be the saviour!


Thanks again Gav


Dave

If the 87 has the amp under the coil it will be the same 2 wire as the 85

If the 87 amp is on the distributor the wiring will need some work .