ausubaru92 Posted February 28, 2005 Share Posted February 28, 2005 The story is as follows,.. Slight overheat (didn't boil), wouldn't idle , week later > Cat converter Blocked, gutted it, Swapped fuel float, Still runs like POO!!! and also clicks down the exhaust (a small backfire i think) on de-acceleration. What the hell happened to a car that 2 weeks ago ran like a dream????? Any suggestions are welcome Quote Link to comment Share on other sites More sharing options...
85Sub4WD Posted February 28, 2005 Share Posted February 28, 2005 Welcome to Hitachi carb world - that's how mine went - I converted to SPFI and I am NOT looking back. Another possibility is that your T-belt slipped a tooth (very unusual) or your timing is off (more common) I would also replace your t-stat with an OEM 180 - degree one The exhaust noise is probably caused by the ASV valves - those can be plugged. Quote Link to comment Share on other sites More sharing options...
incognito Posted March 1, 2005 Share Posted March 1, 2005 Could possibly be a head gasket ready to go? Quote Link to comment Share on other sites More sharing options...
ausubaru92 Posted March 2, 2005 Author Share Posted March 2, 2005 I was talking to a mechanic the other day and he suggested a blocked idle jet. so i will pull off the cover and clean it out I have removed the exhaust air injector and plugged the hole, but my exhaust gasket is shot and leaks. It runs fine at speed, just wont idle. Im considering a SPFI conversion, but i need more money, the wreckers wanted $120 for the Throttle body and $150 for the ECU I was also looking at a MPFI swap Quote Link to comment Share on other sites More sharing options...
northguy Posted March 2, 2005 Share Posted March 2, 2005 Take the carb off, clean it thoroughly, replace the gasket, pay attention to the idle port, and then smash it with a ten pound sledgehammer and swith to spfi, or you could put it back on. Your choice. Quote Link to comment Share on other sites More sharing options...
exister99 Posted March 2, 2005 Share Posted March 2, 2005 What the hell happened to a car that 2 weeks ago ran like a dream????? Sounds like someone tore through it like a bull in a China shop. Might I suggest a little more patience and attention to detail? Quote Link to comment Share on other sites More sharing options...
beauregaardhooligan Posted March 3, 2005 Share Posted March 3, 2005 Bad exhaust gaskets will hurt performance. Quote Link to comment Share on other sites More sharing options...
85Sub4WD Posted March 3, 2005 Share Posted March 3, 2005 Sounds like someone tore through it like a bull in a China shop. Might I suggest a little more patience and attention to detail? Actually - I had identical probs, and my carb turned out to have 1/4'' of sludge in the bottom of it - never did get it to run right after that In my expierence, the shape of a carb has fairly little to do with how its been driven, and more to do with the gas that has been run through it - with the exception of a carb that is at WOT a lot Bad exhaust gaskets will hurt performance. I think that is a definate possibility too Quote Link to comment Share on other sites More sharing options...
naru Posted March 3, 2005 Share Posted March 3, 2005 The story is as follows,.. Slight overheat (didn't boil), wouldn't idle , week later > Cat converter Blocked, gutted it, Swapped fuel float, Still runs like POO!!! and also clicks down the exhaust (a small backfire i think) on de-acceleration. What the hell happened to a car that 2 weeks ago ran like a dream????? Any suggestions are welcome The fact that your convertor became blocked shortly after the idle problems began is strongly suggestive of unburnt fuel entering the exhaust from a leaky carb float valve. Quote Link to comment Share on other sites More sharing options...
ausubaru92 Posted March 6, 2005 Author Share Posted March 6, 2005 Originally Posted by naru The fact that your convertor became blocked shortly after the idle problems began is strongly suggestive of unburnt fuel entering the exhaust from a leaky carb float valve. That was my first guess But the mechanic that looked at it say'd it was idleing lean. as soon as i get some time on my hands i will pull it off and have a look Quote Link to comment Share on other sites More sharing options...
Horse Posted March 6, 2005 Share Posted March 6, 2005 My Justy did that after i put a FI cleaner product for SUV's into the tank... treated all 35 gallons in my 9 gallon tank, cleaned all the crud from 7 years of sitting in to the fuel filter in about 20 minutes and there i sat. It would run fine, run like death, and quit... repeat. The car did run hot due to a lean condition and blew the head gasket. Quote Link to comment Share on other sites More sharing options...
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