mailmanmagic
Probationary Member
- 2
- 0
- Sep 1, 2019
-
Manila,
Asia
Car runs fine under load, and even when you start it for the first 5 or so seconds when idle is high, When idle settles at around 850 you can really feel the engine vibrations and misfire.
The Galant is running and driving but the vibration is extremely worrying, at stop and go traffic the idle is really terrible and it sounds like its running at 3 1/2 cylinders, when driving and letting off the throttle, you can also hear the misfires. idle also drops at traffic but ive never experienced it stalling out at traffic
Backstory on how the problem started:
It was running great before but due for Preventive Maintenance, I cleaned the Injectors, TB, IACV, EGR, MAF and other sensors, changed BISS screw gasket, changed plugs with correct gapping, retorqued the head, replaced belts and pulleys. I replaced Timing Belt A and B (for the balance shaft), while adjusting the timing, I noticed that the oil pump sprocket is not moving freely, I really have to turn it with force to adjust it. Since I can't use the method where the oil pump sprocket falls freely to correct the balance shaft position, I went behind the block to insert a screwdriver to ensure the balance shaft was adjusted correctly. All timing is correct since I repeated this process 3 times already trying to fix misfiring issue, Tension for the belt is also correct.
Could it be that the oil pump sprocket not moving freely be causing the problem and misfire? The balance shaft was already making a knocking noise before and I was already planning on doing a Balance Shaft Delete.
NO CEL on gauge, Engine is 1g 4G63 NA
Any suggestions would be appreciated
The Galant is running and driving but the vibration is extremely worrying, at stop and go traffic the idle is really terrible and it sounds like its running at 3 1/2 cylinders, when driving and letting off the throttle, you can also hear the misfires. idle also drops at traffic but ive never experienced it stalling out at traffic
Backstory on how the problem started:
It was running great before but due for Preventive Maintenance, I cleaned the Injectors, TB, IACV, EGR, MAF and other sensors, changed BISS screw gasket, changed plugs with correct gapping, retorqued the head, replaced belts and pulleys. I replaced Timing Belt A and B (for the balance shaft), while adjusting the timing, I noticed that the oil pump sprocket is not moving freely, I really have to turn it with force to adjust it. Since I can't use the method where the oil pump sprocket falls freely to correct the balance shaft position, I went behind the block to insert a screwdriver to ensure the balance shaft was adjusted correctly. All timing is correct since I repeated this process 3 times already trying to fix misfiring issue, Tension for the belt is also correct.
Could it be that the oil pump sprocket not moving freely be causing the problem and misfire? The balance shaft was already making a knocking noise before and I was already planning on doing a Balance Shaft Delete.
NO CEL on gauge, Engine is 1g 4G63 NA
Any suggestions would be appreciated