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post #1 of 4 Old 10-26-2003, 03:56 PM Thread Starter
NJCJ7
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running pig rich...

for those of you who read my starting problem thread, i originally suspected a continual flooding problem, cause the carb is DUMPING fuel into the intake at a ridiculous rate. I suspect the carb, except i am fairly certain that the previous owner had it rebuilt right before he took it off the road. It had sat for 4 years, so who knows what's gummed up in there. Before I run out and buy a reman'd though, i'd like to know what else could cause it to run so rich.

Pieces of my pulse air system are still in place, but for the most part it's disintegrated and inoperative, if that matters. It's a 258 auto with original Carter bbd. Any sensors or something that could cause the super rich condition? Thanks!


1985 CJ7 MC2100,TFI, 2.5" BDS suspension, Full Cage, 31" Mud Tires, 1/2" MORE shackles, Aussie Locked AMC 20
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post #2 of 4 Old 10-26-2003, 04:38 PM
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the float needle seat could have a small piece of debris in it, causing the bowl to flood.....that happened to me, till I took it apart and found the small rust/metal from the tank...it too was sitting for a while.

Ed
1975 CJ-6 1983 CJ-8
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post #3 of 4 Old 10-26-2003, 04:47 PM
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it is common knowledge all carter BBD's on 258's have a tendency to develop crack's in their venturi's causing it to drip fuel into the cylinders, causing it to not idle, rough starting, and ofcourse running "pig" rich... if your sticking with the 258, its my recomendation you look into other carburator options, such as weber... along with fixing this problem you will find more power and better fuel economy with virtually all the other options. the carter BBD is considered the worst carb you can fit on the 258 - in terms of everything. simplicity, economy, performance, reliability....

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post #4 of 4 Old 10-26-2003, 06:47 PM Thread Starter
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Quote:
Originally Posted by ImNotRyan
it is common knowledge all carter BBD's on 258's have a tendency to develop crack's in their venturi's causing it to drip fuel into the cylinders, causing it to not idle, rough starting, and ofcourse running "pig" rich... if your sticking with the 258, its my recomendation you look into other carburator options, such as weber... along with fixing this problem you will find more power and better fuel economy with virtually all the other options. the carter BBD is considered the worst carb you can fit on the 258 - in terms of everything. simplicity, economy, performance, reliability....
That's interesting, i definitely saw some odd fuel drippage at one point...

1985 CJ7 MC2100,TFI, 2.5" BDS suspension, Full Cage, 31" Mud Tires, 1/2" MORE shackles, Aussie Locked AMC 20
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