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Idles but won't go.

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Offline Tintin

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Idles but won't go.
« on: October 14, 2012, 02:39:58 PM »
Today as I was driving to work my Samurai suddenly lost power. It had been running fine, I was cruising in fifth gear, and all of a sudden, the engine bogged like I had flipped a switch. I popped it in neutral, and everything seemed fine. It idles fine, but as soon as I try to drive or give it gas, it bogs immediately. I found that if I depressed the pedal extremely slightly, it would accelerate. I could get it up to about 25 mph after about 2 minutes of this. I got to work, when I started it to go home, it started fine, I revved the engine, everything was ok. I popped the hood to make sure everything was in place and nothing looked obviously wrong. I also wanted to let it warm up to see if it would duplicate the same symptoms. Nothing unusual. I drove out of the parking lot, started on my way, and suddenly BAM, again I had the same situation. I found that I could get the engine into high RPM by blipping the throttle over and over. I had to do this to get it rolling. I got it home and began to investigate. I pulled all the plugs, they were all in good shape. I checked thoroughly for vacuum leaks, I found none. I removed the carb hat and watched the choke operate during warm-up. Everything seemed fine. I let it idle for about 15 minutes. I revved the engine occasionally to check for symptoms. It revved up fine, no smoke, no problems. I re-installed the carb hat, let it idle more, revved it more. Nothing. I got it in, drove down the road about 2 blocks, and again, same exact thing. What....in the world....is going on? I got out and pulled off the carb hat, revved the engine, still bogged. I know I have spark, I know I have air. Timing seems right. Fuel pump? Please help.
1986 Samurai Stock Tin Top

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Offline mrfuelish

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Re: Idles but won't go.
« Reply #1 on: October 14, 2012, 10:12:22 PM »
not sure if you still have the stock exhaust but they had a recall years ago on the pipe coming out of the manifold, it was double walled and the inside pipe would collapse and do what yours sounds like, or a bad cat.
1987,1988,1988,1990 samurai's,  1953 m38a1,  1996 x-90,blue.1996 x-90 red.1994 2 door tracker.   only Dead Fish go with the flow.                No Hairy Nosed Wombats were ran over on the trail today.       My ZUK is Xenophobic.

Re: Idles but won't go.
« Reply #2 on: October 21, 2012, 10:01:54 AM »
mine id doing same thing, changed fuel filter and pump and changed nothing

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Offline rascott

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Re: Idles but won't go.
« Reply #3 on: October 21, 2012, 09:03:50 PM »
talking 2bb hitachi carb?
i had symptoms like described when the mixture control valve went whacko.
basically only fuel at in idle circuit- nothing for the main circuit.
mabe
'89 kick w/little motor, still got pieces of jeff's pucks, stan's sticks into 4.24:1 tcase, 31x10.5x15's, rear lockrite, kick power steering, some radios(kj6esv), bmw seat, other changes just because. done on the cheap.
suzi the psychic gets me fishing.