Mr. Carb Posted December 16, 2003 Share Posted December 16, 2003 I know this is probably a general carbrator problem or adjustment because both moters I've had in this car did it, and so does the chrysler. Anyway my 84 brat recieved an 86 or 87 hydroluc moter... Has a Carter-webber on it (I know they suposivily suck) But the hatachi carb did the same thing on the other moter. Even after the engine is warm, when I give it gas, it sputters out for a second and then reves up to 2-3,000 rpms Is there something adjusted wrong causing this? or is it just a side effect of a high milliage moter? Thanks for any imput:D Quote Link to comment Share on other sites More sharing options...
Guest taprackready Posted December 16, 2003 Share Posted December 16, 2003 I don't think high mileage has anything to do with it. I've got 176,000 on my brat with solid lifters and no hesitation. You could have a timing issue or vaccum leak. Also check to see if choke is opened all the way when engine is warm. Bill Quote Link to comment Share on other sites More sharing options...
Goatboy Posted December 16, 2003 Share Posted December 16, 2003 I would put my money on vacuum leak. Probably where the carb mounts to the intake or the intake to the heads. While it is running at idle spray carb clean around the base of the carb and the intake to engine mounting area. If the idle changes at all then you have a leak there and you need to put new gaskets in. If you do have a leak in one of these places you could try and tighten the attaching hardware a tad before trying to replace the gaskets. Don't tighten it to much when it is hot though, I tried this on mine and twisted a carb mounting stud off, metal got to soft when hot. If you do that then you will have to pull and put new gaskets on as well as a new mounting stud. I would just spray the dickens out of the carb. Inside and out. Make sure the choke butterfly valve is moving freely. If that gums up at all it could cause hesitation. Check your timing to but I would be it is a vacuum leak of sticky choke valve. My 2 cents. --GoatBoy-- Quote Link to comment Share on other sites More sharing options...
Mr. Carb Posted December 16, 2003 Author Share Posted December 16, 2003 Thanks, I'll try to get to that today. I already timed it, it's tuned to 8 degrees before top dead center at 800 rpms. And sense the person who put the intake on didn't know where half the vacume hoses went, (no offence to that person) I wouldn't be suprised if there was a vacume leak. As far as the intake goes, there are no gaskets, just silicon seal. *rolls eyes* Like I said, I didn't get to build this moter all my self, so it's got alot of inprobably assembled things on it. I'll try the carbrator cleaner and see what happens. Thanks! Quote Link to comment Share on other sites More sharing options...
Guest taprackready Posted December 16, 2003 Share Posted December 16, 2003 OK. your gonna need to remove the intake and take off all the silicon. Do not use silicon. Use the paper gaskets, dry, they are the best. Fuel will eat the silicon and silicon squeezes out into the intake area when it was assembled reducing the size of the intake runner. Same thing for the carb mounting surface. Paper gaskets only. No sealer. Also if the vaccum lines are messed up then try desmogging the vehicle and remove the sensors and plug all vacuum lines. You need one for vaccum advance for the distributor, and perhaps another for the controls in the dash for heater and AC. Thats it. Bill Quote Link to comment Share on other sites More sharing options...
Mr. Carb Posted December 16, 2003 Author Share Posted December 16, 2003 Figures... alright. looks like I'm dismantaling the car, again. Guess unless I do it my self it doesn't get done right. :banghead: Thanks for the info.:-) Quote Link to comment Share on other sites More sharing options...
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