Search found 16 matches

by ricey30
Sat Feb 24, 2018 3:58 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

No further forward Swapped carb and brand new plugs Sounds like it’s trying to catch Got a small back fire from exhaust Lots of fuel vapour from crankcase breather Battery gave up so oncharge pending setting fire to out in the morning 😕 If anyone can rccommehd a Mobike mech who knows v8 I’m happy to...
by ricey30
Fri Feb 23, 2018 10:26 am
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Dave your right if it doesn’t fire with the new plugs I have s 1404 off a 3.9 which I know o be good in my mates garage I will borrow that and that will eliminate carbonation at least to get it started

Thanks for support
by ricey30
Thu Feb 22, 2018 6:43 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Hi all Quick update New comp tester gave the following results Right bank dry test full throttle 90ish per cylinder on all cylinders Left bank dry test full throttle 90/100 per cylinder on all cylinders. Left bank wet test on one cylinder went up to 120 Left bank with rocket oededtsl shims removed c...
by ricey30
Tue Feb 20, 2018 7:47 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Thanks fir all your help. I’m waiting on a comp tester with a brass shaft rather than rubber hose to check comp and do oil in bores after dry test, and full throttle Got a new set of plugs on the way And I have found out the edelbrock 1404 I am using was jetted for a 4.6 and could be way to rich for...
by ricey30
Mon Feb 19, 2018 6:22 am
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Great points all round guys thank you The fuel vapour from excessive cranking I would think is a great point. It’s in a four barrel and the vapour only starts after several seconds of continuous churning when it sounded like it wanted to catch. So I’m grabbing that fir a moment! I haven’t done a wet...
by ricey30
Sun Feb 18, 2018 8:58 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

That’s what I thought Dave and I can’t see losing appx 100psi in compression on blow past the rings.

But if I have the cam out a tooth and the inlet is still open, I would guess this would give me a low compression. ??
by ricey30
Sun Feb 18, 2018 3:38 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Hi Chris and John Folllowing your inputs I have followed Johns points first and cross checked everything and all was correct. Followed Chris’s point and low and behold I have a shocking 60 psi on all of one bank and appx 70 across the other bank. Which is obviously dreadful. One other point we notic...
by ricey30
Sat Feb 17, 2018 5:51 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Very delayed update due to weather and commitments. Basucky not very far ahead . Changed dizzy fir new and proven coil added engine earth strap and now I have continuous spark on cranking , the coil shows 10v when cranking, smell of fuel is strong, but will not fire. Did get a back fire once but not...
by ricey30
Mon Jan 08, 2018 5:04 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Re: V8 rebuilt no spark

Right module changed no difference , pick up coil is pulsing so that looks ok. Definitely a rsesistor in the wring loom somewhere which I intend to bypass . But just realised the coil clamp isn’t earthed via the bodywork.

Could this lack of earthed coil be the issue ???

Cheers
by ricey30
Mon Jan 08, 2018 7:18 am
Forum: Electrical & Ignition Area
Topic: No spark frustration
Replies: 13
Views: 5684

Re: No spark frustration

Just hijacking this thread, I have the same prob on my set up on Mgb gt I have another thread open below thus one . Can I ask if it would appear that a decent ground solved the prob? As I have grounded the engine and I do get 12, to ground etc but not big enough spark to fire? I’ve finr all the chec...
by ricey30
Sat Dec 30, 2017 7:27 am
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Thanks for the points to try out. I’m away until new year but have got New Lucas module and New pick up base from rimmers. Plus I def need a continuous 12v as the old Mgb loom def has a resistance wire built into it. I’ll do this sbcheck the gaps etc then report back hopefully with a result in a few...
by ricey30
Mon Dec 25, 2017 11:30 am
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Hi Dave

Thanks for that I will grab a new module and pullit apart innext few days thanks for your input I’ll feed back the end result cheers
by ricey30
Sun Dec 24, 2017 3:47 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Guys thanks for the responses on xmas eve.

I am going to bite the bullet and buy a new dizzy from Powerspark in Bromsgrove (simonbbc.com)

Has anybody used these before?
by ricey30
Sun Dec 24, 2017 12:23 pm
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

Hi all checked coil for spark with king lead attached to spare plug. on cranking I get 2 -3 tiny sparks then dies. on disconnecting the - side of the coil that goes to the dizzy, and using a fly lead to touch against good earth in its place I get decent sparks, which leads me to believe the coil is ...
by ricey30
Sun Dec 24, 2017 9:56 am
Forum: Electrical & Ignition Area
Topic: V8 rebuilt no spark
Replies: 35
Views: 9516

thanks guys quick update I sorted the starter motor wiring, the white/green does go to the coil and does connect to the cold start lug on the new starter. now going to check the Lucas 198 coil that is new is actually doing the job its should. the 35ldm8 dizzy is a 3 pin module mounted on the side. I...

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