Rumble in exhaust & engine, need help
#1
Pit Crew
Thread Starter
Rumble in exhaust & engine, need help
Hello,
I'm in the midst of reviving a 1995 SC400 with 195K on the odometer. According to the prior owner, the car sat for about 2 years. We put some fresh gas in it and it seemed to help. I need to change the fuel filter. More details about this car can be found here. The car is progressing nicely, but I'm fighting a few remaining issues. At this point I have a rumble in the exhaust on the driver side. Please check out this video;
I also feel this rumble/hesitation in the engine, especially when the car is drive and is moving from 0 to 20mph. The car seems to smooth out as speed increases.
Has anyone else experienced this issue? Really need help with diagnosing the problem.
I'm in the midst of reviving a 1995 SC400 with 195K on the odometer. According to the prior owner, the car sat for about 2 years. We put some fresh gas in it and it seemed to help. I need to change the fuel filter. More details about this car can be found here. The car is progressing nicely, but I'm fighting a few remaining issues. At this point I have a rumble in the exhaust on the driver side. Please check out this video;
I also feel this rumble/hesitation in the engine, especially when the car is drive and is moving from 0 to 20mph. The car seems to smooth out as speed increases.
Has anyone else experienced this issue? Really need help with diagnosing the problem.
#2
Pit Crew
Thread Starter
Here is how the engine sounds. I've never heard an SC400 up close before. Does my car sound healthy? It seems a bit loud, but it's also a big engine. I had a leaking power steering pump that I swapped out. The car seems a bit quieter now. Please excuse the wind noise at certain points of the video.
#4
Pit Crew
Thread Starter
Yep, just on the driver side. I'm doubting it's a gutted cat. It feels like it's a miss n the car is running on 6 cylinders. I'm going to check the timing. Maybe the timing belt was put on incorrectly. The car is stumbling from take off to about 20mph.
#5
Pit Crew
Thread Starter
(((BUMP))) This turned out to be related to the spark plugs. I had about 6 of them that were barely finger tight. I assume the previous owner pulled them n forgot to tighten them or something. There were a few plugs that were only a few turns into the block. I started by cleaning n torquing the existing plugs (some cheapy Autolite plugs). The car improved quite a bit. I then replaced all the plugs with some NGK Iridiums. Man, the car is running MUCH better. No more gurgle in the exhaust. I'm going to swap the distributor caps n rotors next. I still have an engine code 25 though. Also, a couple plugs had quite a bit of oil on them (electrode side). I'm praying there's no issues with the piston rings.
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