The car is down on power
11-11-2007, 07:21 AM
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The car is down on power Took my car to the drag strip and it was really off the times that it ran before. I am talking about being a second slower and 10mph off it's best trap speed.
Tell me what you guys think of my check list on diagnosing what's going on.
1 - check valvetrain (springs, rockers, pushrods)
2 - compression test
3 - leakdown test
4 - pull the heads and inspect the lifters, pistons, cylinder walls
Here is the crazy thing. I sprayed the car at the track to and didn't hit it until the 60' mark and I still picked up 13mph and it was a 150 shot.
The springs that are on the car right now are comp 921s with about 12000 miles on them.
Tell me what you guys think of my check list on diagnosing what's going on.
1 - check valvetrain (springs, rockers, pushrods)
2 - compression test
3 - leakdown test
4 - pull the heads and inspect the lifters, pistons, cylinder walls
Here is the crazy thing. I sprayed the car at the track to and didn't hit it until the 60' mark and I still picked up 13mph and it was a 150 shot.
The springs that are on the car right now are comp 921s with about 12000 miles on them.
11-11-2007, 07:59 AM
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Well it was spraying from 3500-6700 RPMs. There is a slight ticking sound. It doesn't smoke at all.
I picked up time and mph while I was spraying. It went from 107 to 120mph from N/A to spray. I launched harder off the bottle than I did on the bottle.
Does it feel right? - It always feels fast compared to my Jeep. I eliminated any problems from the clutch on back because I am still pulling 1.59 60's and that is what it was doing before when I running 118mph N/A.
I picked up time and mph while I was spraying. It went from 107 to 120mph from N/A to spray. I launched harder off the bottle than I did on the bottle.
Does it feel right? - It always feels fast compared to my Jeep. I eliminated any problems from the clutch on back because I am still pulling 1.59 60's and that is what it was doing before when I running 118mph N/A.
11-12-2007, 07:09 PM
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Compression goes like this
1 - 185
3 - 175
5 - 185
7 - 180
2 - 195
4 - 190
6 - 190
8 - 185
None of the cylinders leaked down after I stopped cranking the motor over. My friend thinks it's a super safe tune and that is why I am so down on power compared to what it used to be.
1 - 185
3 - 175
5 - 185
7 - 180
2 - 195
4 - 190
6 - 190
8 - 185
None of the cylinders leaked down after I stopped cranking the motor over. My friend thinks it's a super safe tune and that is why I am so down on power compared to what it used to be.
11-12-2007, 07:36 PM
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Friend told me to check the plug wires and I have 6 that are 25-26 ohms of resistance, one at 27 ohms and one at 250 ohms of resistance. I don't think that would completely kill the car's power would it?
