Maddrab Posted January 27, 2015 Share Posted January 27, 2015 (edited) Hi there, New to the forum so please handle with care... Hope I'm in the right section. Recently puled my TT EB4 Rally Game out of storage. Did the usual strip down, cleaned, lubricated etc. Car will start, usual blow down breather to pressurise tank, but cuts out quickly. Thinks - ah blocked breather from the exhaust, so no pressure to tank. Cleaned out nipple on exhaust, and breather pipe to tank, all passing pressure no problem. Engine will still not run once initial fuel used. Can keep it running blowing into pipe. Can blow through exhaust and get pressure at end of breather. Stumped Anyone got any ideas? Edited January 27, 2015 by Maddrab Quote Link to comment Share on other sites More sharing options...
jari Posted January 27, 2015 Share Posted January 27, 2015 Car will start, usual blow down breather to pressurise tank, but cuts out quickly. Thinks - ah blocked breather from the exhaust, so no pressure to tank. Cleaned out nipple on exhaust, and breather pipe to tank, all passing pressure no problem. Engine will still not run once initial fuel used. Can keep it running blowing into pipe. Can blow through exhaust and get pressure at end of breather. not sure what you mean by "can keep it running blowing into pipe" what about the tank seals? are they ok? perished? might you be leaking pressure round the tank filler? Quote Link to comment Share on other sites More sharing options...
Maddrab Posted January 28, 2015 Author Share Posted January 28, 2015 The tank doesn't have a pump to prime, so I use a piece of fuel pipe to blow into the tank to do that. If I leave that pipe on and blow when it starts I can keep it running, when I stop or pass over to the pipe from the exhaust it cuts out. That was to prove that with pressure, it will run ok, therefore I can't be getting any pressure from the exhaust. So cleaned out the pipe etc but it still won't keep running I'll check out the seals for sure though, in case that's causing the pressure loss. Quote Link to comment Share on other sites More sharing options...
Maddrab Posted January 28, 2015 Author Share Posted January 28, 2015 OK, Tank seal checked ok. I can blow into the breather with the outlet sealed and no pressure loss. Quote Link to comment Share on other sites More sharing options...
Anthoop Posted January 28, 2015 Share Posted January 28, 2015 I would guess that the carburettor is a little bunged up...more specifically the HSN and seat. You could just unwind it a couple of whole turns and force fuel through (with throttle wide open,) to flush it or pull the needle out and clean both needle and seat. When even a small amount of fuel is left in the engine the main parts evaporate leaving behind the parts that do not evaporate ...the HSN is the smallest orifice and is easily blocked or restricted. Quote Link to comment Share on other sites More sharing options...
jordanp Posted January 28, 2015 Share Posted January 28, 2015 sounds like theres not enough pressure getting through the pipe in the exhuast, check theres no holes in the exhuast other than the 2 needed, hole for the pipe and the stinger Quote Link to comment Share on other sites More sharing options...
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