Hello, I have a 95 gsr. When i step on the gas the car will sputter slowely but anooyingly till it passes 2g rpm after that it clears away. I check and changed my spark plaugs and wires. Checked distributer and timing, checked injectors. Did a compression test and got back 240-240-240-90 psi. The cylinder closest to the distributer is the one that got 90 psi. And just a lil bit ago it started to back fire every now and then? Please if you have ne ideas or suggestions to what it may be I really would appreviate it. Thank you Very much

 

WTHell is wrong with cylinder 4?? That could be most of your problems right there.

 

Thats what i am trying to find out. Whats wrong with it. I don;t really know all I know is that compression is being lost majorly. I dunno what it would be? In the head the block I dunno. please help

 

definately looks like #4. But when you get that fixed, if its still happening, could be a timing problem. good luck

 

Your in the wrong forum buddy, try here: https://honda-tech.com/zeroforum?id=6

if you want help with your motor seek a qualified mechanic fast.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso &raquo;</TD></TR><TR><TD CLASS="quote">Your in the wrong forum buddy, try here: https://honda-tech.com/zeroforum?id=6

if you want help with your motor seek a qualified mechanic fast.</TD></TR></TABLE> At least the guy kept this question almost tech like...

 

ok so i end up pulling my head off today. Some people had said it could be a bent valve or it could be the lifters. once the head was off the car I poured lil portions of gas into the intake and exhaust side to see if it would leak through the valve on the bottom of the head. The machine shop told me to try this, they said it would determine weather or not the valve was sitting in it;s seat properly. So I tried it and no leaks from what i saw. i shook it around and check again, the gas just stayed inside the ports and did not leak through the valve. I have no idea what it could be. I was hoping it was the head. But i dunno. the car would backfire from time to time and it would pour white smoke from out the valve cover through where u pour oil in. Even on a cold start when the motor hasnt been started for almost a day it would sart up and as soon as i would open the cap on the valve cover white smoke would pour rite out. I'm pretty sure im loosing compression on my 1st cylinder cause the psi test came back once again 90-240-240-240., As what my mechanic told me. Does it look like its ne thing to do with my head? Or could it posibbly be my block? Oh ywa the cylinder with the weak compressions spark plug is way darker than other. Please ne suggestions or advise would help me greatly Thank you.

 

lots of things can cause compression loss. go take it in. can't you read what bbasso said?

 

probably toasted pistons seal/ring. although its usually #3, the way you describe white smoke sure sounds like its piston ring.. now you said you reinstalled the head.. this way its not headgasket

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">probably toasted pistons seal/ring. although its usually #3, the way you describe white smoke sure sounds like its piston ring.. now you said you reinstalled the head.. this way its not headgasket</TD></TR></TABLE>

If you were ghetto, you could disconnect one spark plug (#1 cyl) and see if the smoke goes away

 

I am following your dilema here and do not know if this will post in the right spot...

If the head is still off you might be able to pull the oil pan and rotate the number 1 to bottom dead center and pull the rod cap. At this time, you can push the piston and rod out of the top of the block-use a broom handle to prevent damage to the piston etc. Then, you can determine if you have a broken ring or cracked piston. Get a friend to help.

This method is kind of low-rent, but sounds like the other pistons are sealing fine. If you pull it and see no problems with it you will probably neet to pull the block and have it Magnafluxed for a crack in the cylinder sleeve.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 200cs &raquo;</TD></TR><TR><TD CLASS="quote">I am following your dilema here and do not know if this will post in the right spot...

If the head is still off you might be able to pull the oil pan and rotate the number 1 to bottom dead center and pull the rod cap. At this time, you can push the piston and rod out of the top of the block-use a broom handle to prevent damage to the piston etc. Then, you can determine if you have a broken ring or cracked piston. Get a friend to help.

This method is kind of low-rent, but sounds like the other pistons are sealing fine. If you pull it and see no problems with it you will probably neet to pull the block and have it Magnafluxed for a crack in the cylinder sleeve.</TD></TR></TABLE>
Good suggestion and exactly what I was going to type. Godd luck.

 

hey as a matter of fact, i turn the crank pulley so that the piston that was Top dead center was like in the middle, then i was able to see the cylinder wall of the piston that was losing compression. I noticed that the one that was losing compression had like a burnt stain on the wall but not really physically scratch when i felt it. The other 3 cylinder walls looked the same but the stained one. The stain look like it might of been the piston ring. So if my problem is in my block can I just buy a new piston and piston ring and replace it or is there ne thing else involved? Thank you