Got a 85 GSL has a half throttle problem
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Play Well
Joined: Feb 2005
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From: We're all fine here now, thank you. How are you?
First a couple of pics.







The car has 147k on it just rebuilt the carb and did a full tune up with fuel filter, plugs, wires, cap, button and super stock accel coils. It has a small oil leak coming from the oil cooler, the only other problem is a stuttering when I am at half throttle, and the car runs out of power after 5500rpm. The car pulls pretty strong(could be better) off of idle if I mash the gas but like i said runs out of power at 5500rpm, but if I am cruising it spits and sputters. The car is also using a ton of fuel. I cant find any leaks or smell any raw fuel.
With the correct timing set and idle set, and at operating temps it pulls 19-20ft of vac at idle. Is this normal or two low. Any help would be helpful so thanks in advance.







The car has 147k on it just rebuilt the carb and did a full tune up with fuel filter, plugs, wires, cap, button and super stock accel coils. It has a small oil leak coming from the oil cooler, the only other problem is a stuttering when I am at half throttle, and the car runs out of power after 5500rpm. The car pulls pretty strong(could be better) off of idle if I mash the gas but like i said runs out of power at 5500rpm, but if I am cruising it spits and sputters. The car is also using a ton of fuel. I cant find any leaks or smell any raw fuel.
With the correct timing set and idle set, and at operating temps it pulls 19-20ft of vac at idle. Is this normal or two low. Any help would be helpful so thanks in advance.
Thread Starter
Play Well
Joined: Feb 2005
Posts: 4,218
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From: We're all fine here now, thank you. How are you?
1. check this: https://www.rx7club.com/1st-generation-specific-1979-1985-18/common-cause-power-loss-nikki-carbureted-models-632007/
2. replace fuel filter
3. check for clogged cats
4. check fuel pump pressure and flowrate
5. rebuild carb if needed
2. replace fuel filter
3. check for clogged cats
4. check fuel pump pressure and flowrate
5. rebuild carb if needed
Thread Starter
Play Well
Joined: Feb 2005
Posts: 4,218
Likes: 0
From: We're all fine here now, thank you. How are you?
1. check this: https://www.rx7club.com/showthread.php?t=632007
2. replace fuel filter
3. check for clogged cats
4. check fuel pump pressure and flowrate
5. rebuild carb if needed
2. replace fuel filter
3. check for clogged cats
4. check fuel pump pressure and flowrate
5. rebuild carb if needed
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