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Old 04-21-2005, 09:51 PM   #1 (permalink)
 
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kanuha
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I have a 87 zuki it runs good when you baby the gas pedle,BUT when you geet on the gas hard it BOGGS OUT like it dids more gas. I chect the fuel pump its fine.????????????????????????? HELP!

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Old 01-03-2007, 09:10 PM   #2 (permalink)
RWD
 
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Default Fuel Filter problem ... or

I'd check the fuel filter. Replace it they are cheap.

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Old 01-06-2007, 06:35 AM   #3 (permalink)
 
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Iv got the same problem and im thinkin of solving with a tune, and a survace, if that dosnt do it maby a sports exhause and extractors
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Old 01-06-2007, 08:18 AM   #4 (permalink)
 
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Ming is an unknown quantity at this point
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Well def try the fuel filter first. And they should be changed every 20K miles or so anyway.
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Old 01-06-2007, 09:51 AM   #5 (permalink)
 
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mine is doing same thing-13 mpg and no power. I changed the fuel filter, checked timing and now putting on a weber to get rid of all the sensors and computer troubles. I don't care what temp the air is coming into the engine or what it is going out. Any one of the sensors or computer could malfunction and your engine runs crazy. If not now, then sometime in future it will malfunction. And some of the sensors and computer cost couple of hundred dollars. As I said, I could care less what the temp of air is--spark, air and gas is all needed to keep an engine running and less trouble.
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Old 01-09-2007, 06:44 AM   #6 (permalink)
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Default Hmmm Bogging down

That could also be not enough air or a leak in a carbarater gasket. I'll ask one of my guys about it and get his opinion. He built many many hot rods in the days of normal carbaration.

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Old 01-09-2007, 07:39 AM   #7 (permalink)
 
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The new weber carb came in yesterday. Put it on it couple of hours and removed air box, all vacuum lines(except vacuum advance) and removed all sensors. I instantly went from no power as in barely 50mph in a 3 mile stretch to 75mph in about a 3/4 to 1 mile stretch. Course I won't be going that fast as a normal deal-just wanted to test it out. Now will see on this tank if the 13mpg will go up and I strongly suspect it will....
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Old 01-09-2007, 08:02 PM   #8 (permalink)
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Default Found this out

Glad you got the new carb. How much was it? Sounds like it beefed up the power. I'll be interested in how much your mileage goes up.

I talked to Bob today. He said that with the problems noted, he felt that the carbarater needed a rebuild. He specifically mentioned that the float and or the needle valves needed replacing. He thinks rather than starving for gas it's getting too much.

I'll be doing that to mine in the near future but I want to change out the plugs wires and distributor cap first.

TTFN

RWD
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Old 01-09-2007, 10:11 PM   #9 (permalink)
 
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The carb-adapter plate, all the linkage, new gas line, new vacuum advance line, air filter and the air filter housing was $299. I think your friend was right, it was running much too rich. I can't believe the power and get up and go that it has now. Mine also had new distrib, new sparkplug wires but I changed the plugs out since changing carbs and put in Bosch Platinum fours. If it run any faster, it would peal off what hair I have left. As it was, when I hit 75, my eyes squinted and my legs trembled. My front torsion bar was broke at the time--just got it welded back today lol....... Being 60yrs old, who said old age has wisdom? It won't go there again but was nice to see it get there since I bought it only would do 50mph if you babied it with care and had a long time to get there.....
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Old 01-20-2007, 03:25 PM   #10 (permalink)
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Coldblood, Do you still have the old Carb? I don't want to take mine out of service while I rebuild one to put on it.

RWD
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