burrowssj Posted November 10, 2013 Share Posted November 10, 2013 So I was doing a service on the crossflow today and I took off the air filter and noticed one side of the carb was dry(starting to go white) while the other was wet with an almost oily residue on on it. Does this mean I have a blockage ? ATM I'm driving it daily so really don't wanna leave it like this if theres a problem It's a 1600 crossflow running a single side draught dellorto Quote Link to comment Share on other sites More sharing options...
Valiant Posted November 10, 2013 Share Posted November 10, 2013 It might be that the damp side is under the bowl breather. Does it run on 4 cylinders? Quote Link to comment Share on other sites More sharing options...
burrowssj Posted November 10, 2013 Author Share Posted November 10, 2013 yup runs fine. Misses a little but nothing major. I've noticed the fuel consumption has gone up hard to tell on these old cars though maybe because I'm dailying it I start to notice stuff I wouldn't normally think about ha Quote Link to comment Share on other sites More sharing options...
bigmatt4 Posted November 10, 2013 Share Posted November 10, 2013 my guess is the back one wet front dry if so float level just a tad high or the emulsion tube / jets arent tight enough wot do the plugs look like black on the wet one clean on the dry one? 1 Quote Link to comment Share on other sites More sharing options...
bigmatt4 Posted November 10, 2013 Share Posted November 10, 2013 also does the filter touch the booster causing a choking effect Quote Link to comment Share on other sites More sharing options...
burrowssj Posted November 10, 2013 Author Share Posted November 10, 2013 my guess is the back one wet front dry if so float level just a tad high or the emulsion tube / jets arent tight enough wot do the plugs look like black on the wet one clean on the dry one? Correct. number 3 plug abit oily rest are ok Quote Link to comment Share on other sites More sharing options...
azzurro Posted November 10, 2013 Share Posted November 10, 2013 ^this. Bloody things are seemingly forever in need of a tutu. Is #3 plug oily (engine ) or carbon (rich )? I assume 1 & 3 are fed from the same barrel or it it a plenum/shared job? if the former #1 plug should be in similar state? If its just the one plug it may be #3 valve not sealing properly and blowing oily crud back up the manifold? What about pcv valve? It may be puffing oily crankcase fumes just at that side. It may be that the white one is the problem and is running lean due to a blocked jet or summat. In any case a clean out and reset floats and idle/balance cant be a bad thing. Quote Link to comment Share on other sites More sharing options...
burrowssj Posted November 15, 2013 Author Share Posted November 15, 2013 crap haven't had time to really sort this yet and just died going over the motorway now running on 3 cylinders... Quote Link to comment Share on other sites More sharing options...
Unclejake Posted November 20, 2013 Share Posted November 20, 2013 I expect Bigmatt is onto it. Your float bowl setting is too high or your float valve is kaput (or you have too much fuel pressure). The other possibility is a lack of vacuum on one of the cylinders fed by the rear 'throat'. First check your float setting, and next check compressions. Quote Link to comment Share on other sites More sharing options...
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