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my 401 is running like crap! In neutral it runs fine but if I put it in gear and try to drive it it is like I threw an anchor out the window! any suggestions will be greatly appreciated!TIA
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J Just
E Empty
E Every
P Pocket
1, 77 wagon $200, amc 401 th400 quadratrack 4 in. lift 33-12.50x15
1984 cj-7 Soa w/401, t-18,dana 20 35-12.50x15 1974 j-10 304 -
Timing could be off, too advanced maybe. I had that problem and a timing gun helped work that out.1988 GW
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I have the timing set at 10*J Just
E Empty
E Every
P Pocket
1, 77 wagon $200, amc 401 th400 quadratrack 4 in. lift 33-12.50x15
1984 cj-7 Soa w/401, t-18,dana 20 35-12.50x15 1974 j-10 304Comment
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Did it always run like crap or is this new?
Timing: get a vacuum guage, even a cheap one, from the local autoparts store. Hook it up to manifold vacuum (it will register something above zero when in park and running). Set the parking brake. Chock the wheels. Put it in Drive.
Advance the timing until you reach the HIGHEST vacuum at idle. This is a great starting point.
THis may have messed up your idle speed but don'tworryaboutit. Take it out for a drive. STOMP on it in 2nd gear at about 45 mph and see ifyou get a PING. If you don't, advance the timing till you do. If you do, back it off till you don't.
Okay, now you have a good spot for your timing. With the guage still attached set the idle speed close to where you want it. Then set the idle mixture to best (highest) reading. Then set the idle speed.
Once you are there, small adjustements are all you need.82 Cherokee WT ? SFwith Alcan/agr box/Borgeson shaft/ 401/performer/Holley TA/HEI/BeCool/727/ALTAS(2.0/2.72/5.44)/D60 Snofighter(Yukon Zip,hubs,stubs,4.56)/14 Bolt (FF,BF shave,Discs, ARB,Artec Truss)/MTR 37/Corbeau Moab Seats /Hella/tuffy console/sliders/custombumpers&roll bar/WARN 8000/steering brace/CO2 Tank/dual batts/custom TCskid plate
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no it ahsn't always ran like crap,
I thank you will e for you insight and I will go get a vacuum gauge and do all that you have described thanks again. You guys rock!!!
J Just
E Empty
E Every
P Pocket
1, 77 wagon $200, amc 401 th400 quadratrack 4 in. lift 33-12.50x15
1984 cj-7 Soa w/401, t-18,dana 20 35-12.50x15 1974 j-10 304Comment
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How long's it been since the last tune up, points, plugs, cap, rotor, plug wires etc?joe
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