Gallery, Projects and General > Project Logs
Webster IC Engine build log.
dbvandy:
If you think about what that check valve is doing, it is acting as a second intake valve. If it is binding at all it will cause no fuel to enter the engine. Take it off and connect the tank to the block directly with some tubing and see what happens. The vapor tank is SOOOOOOOOOOOOO forgiving, you only have to be remotely close for the engine to run. I can put just about any flammable liquid in my tank and it will run: rubbing alcohol, denatured alcohol, gas, coleman fuel, kerosene, sterno, are some of what I have run in the webster.
The "run for 20 pops and then nothing" I do not think is going to be fuel or mechanical timing (exhaust) as they are not that sensitive. The unknown variable here for me is the ignition.
Spin it with the plug out and inspect the spark. Could be a grounding issue with the ignition module as you have to have two connections to the plug, one hot, one ground. Eliminate either and it won't run. Your ignition test video shows it grounded to the ignition module itself, (does not get any better than that) make sure you have a good connection between engine and ignition module.
Doug
dbvandy:
http://cgi.ebay.co.uk/AccuSpark-H8000-Ignition-strobe-Timing-Lamp-/180660832618?pt=UK_Diagnostic_Tools_Equipment&hash=item2a1039896a
might be able to find cheaper... any will work for what you are going to do with it... as long as you are not making a living with it, an inexpensive one will be fine.
raynerd:
Yea Doug, I`ll explain to my wife that it is "just" £16... :lol:
that is what I did for the £16 5L tub of fuel, £5 set of magnets, £11.95 bearing (yes could have got it cheaper but got it from a model shop!), £10 lump of brass for the fuel tank, £8 for a new set of Allan Keys, £3.95 can of lighter fuel, £30 for silver solder rods and flux, ect purchased over the last 14 days!! :palm: Not including the materials I got at the start!
hey, I`m not complaining :ddb: , it is my wife that is :wack: :wack: I`ve just text my Brother-in-law, his Dad owns a local garage so should have one it is just if he is away as he spends a lot of time on his canal boat.
CHris
raynerd:
Doug, serious point, what does the ignition light do? The only thing is that I can definately hear the spark when it jumps so will the ingition light tell me any more than this or will it just be a visual thing as well as the noise?
Chris
lordedmond:
Chris you say you can hear the spark ,is it in the right place inside the cylinder or is if outside , i.e. plug cap shorting
I would, although I may be wrong but I would have though you would not be able to here the spark if its the plug firing in the cylinder
a short note but I will leave it to Doug but a timing light will tell you when to plug is firing , but its it is not the plug that is firing but a stray spark it will sill tell you its firing
Stuart
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