It wont start !
It wont start !
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Discussion

Mr Haribo

Original Poster:

318 posts

220 months

Saturday 15th November 2008
quotequote all
After a good thrashing the night before it wont start ?
There is fuel going in and a good consistant spark its had a new coil,leads,and recent plugs.
It will run the battery flat and only catch twice, its been said that its either flooded or the timing has moved as she has always started before first time !
The engine is from V8 Developments i dont know what timing chain ect they use could it have moved ? or does anyone have any ideas many thanks in advance.

GreenV8S

31,027 posts

315 months

Saturday 15th November 2008
quotequote all
You say it's getting fuel so presumably the plugs are wet.

I would suspect it's flooded and fouled the plugs. Get a new set, fit them warm and get the battery fully charged then try again. If it hasn't shown any signs of life after cranking for ten seconds then disable the fuel pump and try again with full throttle for ten seconds.

SimonV8ster

13,030 posts

259 months

Saturday 15th November 2008
quotequote all
I had the same problem with my RV8 not so long ago. Wouldn't start for some reason and then I pulled a couple of plugs - soaked in petrol.

Bought a new coil and some plugs and fired up easily.

Apprantly they can flood fairly quickly if they don't start after a few goes.

hoach

49 posts

218 months

Sunday 16th November 2008
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Back to basics on this one

Compression first, does it sound the same under cranking as it used to , probably okay, or is it sounding quicker? Unlikely to be compression.

Ignition, connect one HT lead to a spare plug and see if the spark is strong and blue on cranking. If so is the distributor loose, can you twist it?

Fuel, can you hear the fuel pump when you switch on the ignition? It should be heard for a couple of seconds, it is quiet, so listen!

Is it flooded are the plugs wet, remove one. To clear flooding foot to the floor on the throttle and crank 15 seconds. Try to start again.

Compression test to eliminate mechanical problem, as this will ensure it is ignition or fuel.
Next, has the ignition timing moved, timing light check on cranking.
Are the injectors getting a signal, check by removing injector plug and fit LED into plug, crank. The LED is polarised so it will only flash when fitted one way round, to be sure check it both ways. If it don't flash you have a problem

Good luck

Red V8

873 posts

258 months

Sunday 16th November 2008
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When you say it won't start... did it at least start briefly and then cut out, then subsequently won't start?

If this is so then it's probably flooded...

If so then it's either plugs out and spin clear... of plugs in foot to the floor until it catches and clears... don't want to open the debate on this, age old AA trick, works for me the couple of times mine has been flooded and hasn't resulted in any lasting damage.