Squid 55 Posted August 19, 2013 Hey guys, Just got a brand new 350 Holley, brand new intake manifold and new gas mixer on my crossflow and its running like shit. I'm not really a mechanic guy but the mechanic that put it on for me took the choke out of the carby, because it didn't fit with the gas mixer? Also, driving home from yesterday on gas, the gas converter froze..? And then when I switched to petrol and it was backfiring.. And it's a bastard to start, actually I can hardly start it.. Help? Any ideas? Share this post Link to post Share on other sites
mcfly94 169 Posted August 19, 2013 Remove the gas is my idea haha, never known a single car to run well duel fuel, not au's not ba's, not xf's, not vy's, not vt's, cars weren't designed to run dual fuel, except a few that run okay that are factory fitted Share this post Link to post Share on other sites
Squid 55 Posted August 19, 2013 I was thinking that. Would solve all my problems Share this post Link to post Share on other sites
GspecZL 979 Posted August 19, 2013 should run better than that though. My car runs ok on dual fuel. Better on petrol though. Share this post Link to post Share on other sites
Squid 55 Posted August 19, 2013 It used to run alright, now new carby set up and it's worse Share this post Link to post Share on other sites
SLO247 1,713 Posted August 19, 2013 Take it back to the bloke who fitted it! Share this post Link to post Share on other sites
Squid 55 Posted August 19, 2013 I'm gonna, I'd thought I'd ask if any had any quick fixes! Share this post Link to post Share on other sites
Thom 6,654 Posted August 19, 2013 Gas converter will usually only freeze when I has little to no coolant flow, check your radiator is full, also check it has been bled properly 2 revhead and XTREME KARTS XF reacted to this Share this post Link to post Share on other sites
dizzy616 183 Posted August 19, 2013 the mixer freezing over wont be the carby. it will be as thom says. somehow isn't getting coolant into it. check thermostat and everything to do with coolant.and make sure the gas hat and air cleaner is sealed onto the top of the carby properly Share this post Link to post Share on other sites
Clevo120Y 815 Posted August 19, 2013 You need to do some tests, first I would do a compression test to make sure a valve isn't been held open, then a check of the ignition system, make sure the leads are in the correct order and no cracks in the dizzy cap, then check the timing. Make sure there are no airleaks around the base of the carb and the inlet manifold to head gasket. In regards to the converter freezing what the others have said is spot on, the converter needs hot coolant to flow through it to vaporise the gas, when there isn't enough temp in it she freezes. Removing the choke was not a good idea in my opinion, it will be a bastard to start without it, if the mixer doesn't fit then it's the wrong mixer or you need to make a spacer to raise it up to clear the choke. I don't want to come across as rude but having personal convo's with you, you might be better off finding a new mechanic as I feel he has let you down a bit if the car left his garage running the way it is. Not having a go at you personally Squid man so please don't be offended by my comments. Share this post Link to post Share on other sites
revhead 1,392 Posted August 19, 2013 had a bit to do with gas ,you need to make sure the coolant level is totally full ,you need to make sure ,the water lines ,are hooked up to make the hot coolant flow through the converter, meaning one of the hoses ,must, come directly from the water pump to the converter ,this will stop it freezing ,has it been fitted with a hi speed flow ,also buying a new system ,should run like a dream ,go back and dont muck around let the dh know your unhappy and that the car is now rooted  generally backfiring means the plugs are rooted or the wrong heat range ,and it could need to be advanced to make it run better 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Squid 55 Posted August 19, 2013 Cheers for your help guys! I though that the gas had something to do with coolant issues. I've rang them and some is coming to have a look, and if they can't get it started then its getting a free tow back to their garage. This is the 4th mechanic in my area that I've taken her to and no one has done a good job.. It's be so much easier if I just had more mechanical knowledge! I'm pissed off about it, because it should just run with the new set up! Share this post Link to post Share on other sites
GspecZL 979 Posted August 20, 2013 when it comes to LPG its harder to get a good mechanic. My mechanic wont touch it. Go to an LPG specialist and see how you go. Share this post Link to post Share on other sites
dizzy616 183 Posted August 20, 2013 get a repair manual. that is how we start to learn. or find one rip it apart and put it back together Share this post Link to post Share on other sites
Squid 55 Posted August 21, 2013 Found out that there wasn't enough flow of coolant (obvious) And the sender in the dizzy was shot Should be good tommorow !! 3 Clevo120Y, dizzy616 and revhead reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted August 21, 2013 I've got my fingers crossed for you mate. Share this post Link to post Share on other sites
Squid 55 Posted August 23, 2013 Got her back today, new sender in the dizzy, starts 1st time, runs a bit rough when she's cold but glad if starts well now! 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
revhead 1,392 Posted August 23, 2013 good news bro, 1 Squid reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted August 23, 2013 She drives a lot better now then? Share this post Link to post Share on other sites
Squid 55 Posted August 23, 2013 Drives sweet, better warm though Share this post Link to post Share on other sites
Squid 55 Posted August 23, 2013 Drives sweet, better warm though Share this post Link to post Share on other sites
Clevo120Y 815 Posted August 23, 2013 That's good to hear mate, happy motoring Share this post Link to post Share on other sites
