Help!!!! detonation problem
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Help!!!! detonation problem
I have a 93 240sx that has bad detonation problem. I put in better gas and most of it is gone, but I can still hear a little every now and then. I built several 240's but never had this problem. any idea's ?
All Around Maxed
Joined: Jul 2003
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Ignition:
Spark plugs - too cold?
Timing
Cap, Rotor, Wires
Fuel:
Filter: dirty?
Fuel Sock: dirty?
Fuel Pump: dying?
It's always the little things that get me...
Spark plugs - too cold?
Timing
Cap, Rotor, Wires
Fuel:
Filter: dirty?
Fuel Sock: dirty?
Fuel Pump: dying?
It's always the little things that get me...
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VR-4 AWD/TT Winter Sled
Ings RSpec, Built KA24DET, GT3071R
VR-4 AWD/TT Winter Sled
lifelong learner
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Originally posted by MaxType 240
Ignition:
Spark plugs - too cold?
Timing
Cap, Rotor, Wires
Fuel:
Filter: dirty?
Fuel Sock: dirty?
Fuel Pump: dying?
It's always the little things that get me...
Ignition:
Spark plugs - too cold?
Timing
Cap, Rotor, Wires
Fuel:
Filter: dirty?
Fuel Sock: dirty?
Fuel Pump: dying?
It's always the little things that get me...
too cold of a plug won't cause pre ignition or detonation, it will simply foul out when the car is cruising, because there won't be enough combustion heat to keep the plug at self cleaning temperature.
timing and carbon build up will probably both do it on a ka
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rest in peace tim.
Advocate for the People's Republic of Awesome
rest in peace tim.
Forever Broke Nissan
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BG fuel system clean. on of the better tune ups you can buy for the money.
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If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.
If you have three quarters, four dimes, and four pennies, you have $1.19. You also have the largest amount of money in coins without being able to make change for a dollar.
All Around Maxed
Joined: Jul 2003
Posts: 587
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Originally posted by Mattback
too cold of a plug won't cause pre ignition or detonation, it will simply foul out when the car is cruising, because there won't be enough combustion heat to keep the plug at self cleaning temperature.
timing and carbon build up will probably both do it on a ka
too cold of a plug won't cause pre ignition or detonation, it will simply foul out when the car is cruising, because there won't be enough combustion heat to keep the plug at self cleaning temperature.
timing and carbon build up will probably both do it on a ka
Anyways, clean the engine to eliminate hot spots (don't really think it'd be that bad but it's an idea).
Go over the fuel items and IACV suggestions first.
