Weak Spark...wait...no.Something else

BMCC · Post by **BMCC** » Thu Dec 12, 2013 8:23 am

I'd make sure the battery was up to it first of all. The type S has a high compression ratio compared to other charged engines so a good battery will be needed. Can you get someone to measure the volts across the battery as you try to start it Just to make sure the volts don't fall away as you are cranking the engine?

Post by **RattyMcClelland** » Sat Dec 21, 2013 3:27 pm

Ok so
- Battery fully charged
- Checked grounds. I dont have the alt/rocker ground in place but it started fine without it since the jackshaft support from the charger is in the way. But i improvised and made a new ground.
- Brand new plugs in and all wires checked over and fuses are fine.

It just cranks forever and wont ignite.

I can only assume it must be the dizzy. I have spark but i must not be string enough.

I even unplugged the greddy EMU and it did the same. The greddy doesnt show any error codes or neither does the car.

So i think i shall try a 2nd dizzy. Not to get one uber cheap.

nick_s · Post by **nick_s** » Sat Dec 21, 2013 4:46 pm

What model number is your dizzy chap?

Post by **RattyMcClelland** » Sat Dec 21, 2013 4:49 pm

TD89U

nick_s · Post by **nick_s** » Sat Dec 21, 2013 7:15 pm

Ah bummer, I haven't got one of those spare. Let me check with a friend who may have one, I'll let thee know in the morning.

Post by **Thebusofwoe** » Sat Dec 21, 2013 8:02 pm

Just my 2 pence worth but i have experienced a non starter due to dizzy. Had spark and fuel, but just wouldn't start. It did turn out to be the dizzy, just as you have all said. IM not sure why but even with a weak/duff coil/igniter, it still shows a spark.

Good luck chap.

BMCC · Post by **BMCC** » Sat Dec 21, 2013 8:04 pm

Can you not test the parts, coil etc?

Post by **RattyMcClelland** » Sat Dec 21, 2013 8:06 pm

BMCC wrote:Can you not test the parts, coil etc?

If you mean by using a plug over the different parts and the coil then yes I have and they all gave spark.

Post by **Thebusofwoe** » Sat Dec 21, 2013 8:12 pm

You can test the coil, in our experience it doesn't give an accurate result tho. The igniter us not testable i think. The only real way to tell is to swap with a known good unit!!

Post by **RattyMcClelland** » Sat Dec 21, 2013 8:16 pm

Yes that's what I hope. I could be just excessive cranking has caused racial abuse amoungst the distributor community in my bonnet.