Club G40 Forum

Technical => Engine and Transmission => Topic started by: physicsfool on August 04, 2013, 09:00:20 pm

Title: Wits end
Post by: physicsfool on August 04, 2013, 09:00:20 pm
Evening all,

So after months of rebuilding, i have come to the fateful restart.

And........ strong spark. fuel is good. but. no. life.

Should I compression test and sort ignition timing out first?

ANY advice however wild will be considered. I am contemplating dropping it off at the local garage. desperate times

Thanks
Title: Re: Wits end
Post by: z3i on August 04, 2013, 10:27:17 pm
Ah man! Sorry to hear after all the work :(

timing definitly right? Is there absoloutly nothing at all? Not even a little bit of life?

like you say. Id double double check timing
i suppose with the compression, if it was that low the engine would turn over much easier and you could hear it

Title: Re: Wits end
Post by: GR40 on August 04, 2013, 11:40:15 pm
Timing is crucial, no timing means u may be igniting the cylinders way late and not making enough pressure in them to sustain the rotation of the crank!
Title: Re: Wits end
Post by: SamG40 on August 05, 2013, 12:30:09 pm
Double check the HT leads order. Its caught a few of us out before!
Title: Re: Wits end
Post by: physicsfool on August 05, 2013, 03:59:15 pm
Update. I mentioned my rotor arm was facing 3pm. So I swapped the 1 ht lead to 3pm from 9pm.

And there are signs of life. Engine is just about catching. But requires me to have my foot on the accelerator pedal the whole time.

The cam shaft isn't rotating smoothly, v jerky. I tightened the end bolt to 65nm as per Haynes.

Any ideas folks?
Title: Re: Wits end
Post by: PeteG40 on August 05, 2013, 04:02:36 pm
Swap the other 2 leads. 1342 from 9 oclock anti clockwise
Title: Re: Wits end
Post by: physicsfool on August 05, 2013, 04:04:17 pm
Yeah I swapped all 4. So 3 is at 12, 4@ 9pm and 2 @ 6 pm
Title: Re: Wits end
Post by: physicsfool on August 05, 2013, 04:14:18 pm
Oh wow. I had 4 and 3 the wrong way around. What a twat I am.

Long story short she is runnnnning. £500 and 2 months later.

Now just waiting on the oil feed banjo and I can take her for a drive
Title: Re: Wits end
Post by: z3i on August 05, 2013, 04:21:01 pm
Woop! lol
Title: Re: Wits end
Post by: gaz g40 on August 05, 2013, 05:15:11 pm
Glad youve sorted it mate!!
Title: Re: Wits end
Post by: Etches on August 05, 2013, 05:39:22 pm
Double check the HT leads order. Its caught a few of us out before!

Great shout Sam! We've all done it before haha
Title: Re: Wits end
Post by: PeteG40 on August 05, 2013, 06:07:56 pm
its complicated by the fact someone put the little pulley thing on his dizzy on 180 degrees off!

and banjo be in the post tomorrow mate!
Title: Re: Wits end
Post by: NeilG40 on August 06, 2013, 07:19:01 am
I never understood why there wasn't a diagram of the dizzy in the haynes manual with the numbers on it, I ended up drawing on in there myself after getting the leads the wrong way round.
Title: Re: Wits end
Post by: SamG40 on August 06, 2013, 11:10:05 am
Double check the HT leads order. Its caught a few of us out before!

Great shout Sam! We've all done it before haha

Ask Robin about the fun we had with his HT leads last year at Blyton. We (he) still got it wrong about 5/6 times even with a working car to copy from!
Title: Re: Wits end
Post by: z3i on August 06, 2013, 11:18:38 am
Double check the HT leads order. Its caught a few of us out before!

Great shout Sam! We've all done it before haha

Ask Robin about the fun we had with his HT leads last year at Blyton. We (he) still got it wrong about 5/6 times even with a working car to copy from!

haha! bad times!

ive got the magnecore ones and they come labelled :)
then just used a sharpie and wrote the numbers on the dizzy cap
Title: Re: Wits end
Post by: Yoof on August 06, 2013, 03:30:19 pm
Double check the HT leads order. Its caught a few of us out before!

Great shout Sam! We've all done it before haha

Ask Robin about the fun we had with his HT leads last year at Blyton. We (he) still got it wrong about 5/6 times even with a working car to copy from!

Good job engine development isn't his job...