How can you tell if you have bent valves? NSFW
04-06-2007, 02:47 PM
#1
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How can you tell if you have bent valves? NSFW
Well I’ve spent about two weeks cleaning up my engine I painted the bay and the motor and cleaned up all the grease and oil that’s built up on everything for the past 15+ years and then I swapped out a shot Trans then changed out my timing belts and water pump.
I had the entire wiring harness off the engine and out of the car I took off the fuse box pretty much anything I could take out without to much trouble I just removed and taped up the rest.
The problem is my car runs like *** and I hear valve chatter and noises that weren't there before. When I first cranked the motor I though I heard the valve hitting the pistons it was just a real nasty sounding noise but the car didn't die or anything it just wouldn't idle right and sounded like it was out of time.
Things I checked all of my grounds and plugs made sure everything was plugged in the right way and all the grounds were tight.
Then I took the timing belts off and put them back on and this time used a straight edge to make sure all the marks were perfect. It ran better when I started it. Almost normal but not quit. It doesn't go anywhere in boost but you can feel it come on and it gives it a little bit but nothing like before.
Now it idles a little higher then normal and it misses or backfires into the intake a little bit I can't really tell witch with the charge pipes on. I did a compression test and it reads 170 on all four but it used to be 190 still lower than normal but if I had never checked the car before I'd think it was fine for 8.8:1 compression??
I don’t know Maybe I have something plugged in wrong and I just not seeing it but it would have to be timing belt still a tooth off or I bent the valves the first time, but then compression isn't as bad as one would think for bent valves
Anyone have an Idea of what I could have done?
And a pic of my motor after I cleaned painted and fucked ---- up.
I had the entire wiring harness off the engine and out of the car I took off the fuse box pretty much anything I could take out without to much trouble I just removed and taped up the rest.
The problem is my car runs like *** and I hear valve chatter and noises that weren't there before. When I first cranked the motor I though I heard the valve hitting the pistons it was just a real nasty sounding noise but the car didn't die or anything it just wouldn't idle right and sounded like it was out of time.
Things I checked all of my grounds and plugs made sure everything was plugged in the right way and all the grounds were tight.
Then I took the timing belts off and put them back on and this time used a straight edge to make sure all the marks were perfect. It ran better when I started it. Almost normal but not quit. It doesn't go anywhere in boost but you can feel it come on and it gives it a little bit but nothing like before.
Now it idles a little higher then normal and it misses or backfires into the intake a little bit I can't really tell witch with the charge pipes on. I did a compression test and it reads 170 on all four but it used to be 190 still lower than normal but if I had never checked the car before I'd think it was fine for 8.8:1 compression??
I don’t know Maybe I have something plugged in wrong and I just not seeing it but it would have to be timing belt still a tooth off or I bent the valves the first time, but then compression isn't as bad as one would think for bent valves
Anyone have an Idea of what I could have done?
And a pic of my motor after I cleaned painted and fucked ---- up.
04-07-2007, 08:16 AM
#3
3.0 BAR
Join Date: Jun 2006
Posts: 3,256
Re: How can you tell if you have bent valves? NSFW
^^^^ SSAutochrome's new....
"junkyard style". :P
On a b-series my buddys and I were working on the car didnt start after jumping a tooth. Ended up being bent valves. Wish I could give you more help but thats the only experience so far I have had with the question in reference.
"junkyard style". :P
On a b-series my buddys and I were working on the car didnt start after jumping a tooth. Ended up being bent valves. Wish I could give you more help but thats the only experience so far I have had with the question in reference.
04-07-2007, 11:09 AM
#4
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Re: How can you tell if you have bent valves? NSFW
Originally Posted by crxrx7
what manifold is that?
It's totally worth it though I only have it at 5psi right now and it made my accord as fast as my sisters gsr.
04-07-2007, 11:15 AM
#5
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Re: How can you tell if you have bent valves? NSFW
Originally Posted by imburne
^^^^ SSAutochrome's new....
"junkyard style". :P
On a b-series my buddys and I were working on the car didnt start after jumping a tooth. Ended up being bent valves. Wish I could give you more help but thats the only experience so far I have had with the question in reference.
"junkyard style". :P
On a b-series my buddys and I were working on the car didnt start after jumping a tooth. Ended up being bent valves. Wish I could give you more help but thats the only experience so far I have had with the question in reference.
04-07-2007, 01:18 PM
#7
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Re: How can you tell if you have bent valves? NSFW
Originally Posted by slo_crx1
Could be cam or crank timing are still out a hair. That would account for a lower compression number.
And I'd think if it had bent valves the compression reading would be way differant in each cylinder not the same?
04-07-2007, 01:32 PM
#8
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Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: How can you tell if you have bent valves? NSFW
I don't know if the straight edge is the best thing to do, especially if when the cam's at tdc it has a slight angle to it. D-series single cams are like that, tdc is not flat across but rather a hair tilted towards the front of the motor. Check your manual...it should tell you which mark to line it up with.
04-07-2007, 02:18 PM
#10
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Re: How can you tell if you have bent valves? NSFW
Originally Posted by slo_crx1
I don't know if the straight edge is the best thing to do, especially if when the cam's at tdc it has a slight angle to it. D-series single cams are like that, tdc is not flat across but rather a hair tilted towards the front of the motor. Check your manual...it should tell you which mark to line it up with.
