is the regulator supposed to get hot to touch within 5mins of running? and will a faulty reg stop the bike from starting? although i'm thinking probably not but i have to use "start ya bastard" to fire the bike up. have plenty of fuel in tank, fuel pump works "new needle and seats" but still having a hell of a time starting the bike
The VRR should not get burning hot that fast. A fried VRR can kill lots of things, including your TCI box, that will prevent the bike from running. That said, if starter spray will get it to start then the no-start issue is fuel / carbs, not electrical. New seats and needles are great, but have you physically removed and cleaned (rodded out with plastic fishing line - NOT wire!) the idle jets? Have you synched the carbs? Have you checked the valve clearances? Hard starts when cold is a classic symptom of tight intake valves.
carbs have been physically removed about 6 times (am getting good at removing them too lol) have been soaked, blown and cleaned but still have a starting issue, now it backfires thru the carbies while trying to start it, needle and seats are for a jetski same size except the needle is 1.5, floats should look after the extra input of fuel you'd think, so I have another fzr here will swap the regulator and see where that will take me, oh well back to the drawing board, and am putting together a few things to sync the carbs (bottles, oil and tubing) but it should still start ?? and at the moment the temp is hover around the high 20s and low 30s C. so i really am hoping not a valve issue, i already have a 750 virago motor in pieces which I am rebuilding don't really want 2 motors to recon
I just mentioned in another thread .... Do a propane test. Direct a hose with propane into your air box, turn the valve on for 5 seconds, turn the valve off and try to start your bike. If it starts and runs fine for very short time, it means your fuel delivery is compromised. If it doesn't it means you have electrical problem, or your intake valves are on the tight side as already previously mentioned.
Never thought of using LPG that way. I have used a bit of petrol soaked into the air cleaner before. Probably a bit safer too as it easy to set yourself on fire with petrol.
Trust me, me neither, until I read it in some tips and tricks of an old mechanic .... First, I was reluctant to try it, but once I did, I had to admit that it is very easy, safe and quick method to point you in the right direction of the issue you are trying to solve.
