okay, i just finished rebuilding my motor and now it smokes, alot...we pulled the spark plugs out and they all look fine except for cylinder 2...the tip is all black and there's a ton of oil in that cylinder...after we put the plugs back in and started it up, it'll do fine...then as we start driving it for about 2-3 minutes, it'll start smoking, we'll pull the plug and there's oil in that cylinder...what's wrong with it?...we did a compression test and they're all around 190psi per cylinder...so any help would be appreciated.

 

hurry up...i need to know today...right now.

 

Bad valve seal? Introducing oil through the valve from the head? You're compression would be fine if the valve seated properly, but every time the valve opened it dumps oil into the cylinder?

Just a guess?

 

well, yeah that's kinda what i thought too...but now that i've looked at it...there's just oil on the tip of the spark plug.

 

still need more info, did a search, not much help there and it has nothing to do with the little donuts seals on the vavle cover. This motor is freshly rebuilt with about 1 mle on it. The only things that i think it maybe are the vavle guide seal or the oil ring is bad and that would suck if it is. Help please!!!!!

 

sounds like you may have a torn or misinstalled valve seal or broken, weak, or stuck oil control ring. Were new valve seals installed on the head?

Did you possibly swap an intake valve seal with and exhaust valve seal?

Just a few things to check...

 

well i took the block to get assembled by a reputable machine shop, so there's a small chance that it could be the rings on the pistons...and the head was bought used and no we did not replace the valve seals(i know i know i should have)...so most likely it could be the valve seals...but give us some more input on what it could be...i wanna know what honda-tech thinks before i pull the head off to get new seals...thanks.

 

bad valve seals will usually smoke on start up like in the morning,
Although they can smoke mainly at a constant idle if there really bad...

Do you get smoke coming out of the valvecover breather?

 

we are not getting smoke from the breather, just out the exhaust.

If you pull the plug out, all you see is oil all over the top of the piston.

I'm starting to think that it has a bad oil ring, but like my cousin said, he did not go through the head either. So I'm looking for more info before I tear into it.

 

i really hope it's not an oil ring...but bump this post because i need to know asap.

 

come on honda-tech GODS...hahaha...it'll blow more smoke as you get on the gas.

 

well the only thing i can say is, along with the other guys on here, is that it is most likely i problem with the head and not the block. chances are it is your valve seals. replace those and it should fix the problem. if not, take apart the block again and have that machine shop fix the problem for you, considering theres nothing else it could be.

what pistons are you running? what head are you running? whats your set-up? 190 seems a little low unless they are lower compression pistons so give us some more info.

 

i'm running a b18c1 block with wiseco 11.8:1 comp pistons...the head is a used jg b16 pro series head...the comp seems low, probably because the rings havent seated yet...i've only driven for about 1 mile, if that...i basically started it up, warmed it up, and drove it around the block, and then parked it again...so that maybe that's why the comp is only at around 190psi...hopefully it'll be around 250+ when the rings are seated.

 

I THINK THERE A GOVE IN THE CYLINDER WALL ON YOUR BLOCK.... BECAUSE THAT WOULD CAUSE SMOKE TO COME OUT YOUR TAIL PIPE ..


PS. DOES ANY ONE KNOW IF YOU CAN RUN A FULLY BUILT GSR HEAD (VALLVES ,VALVE SPINGS , RETAINERS,, AND A SKUNK 2 STAGE 2 CAM , ALSO A PORT AND POLISHED HEAD) AND PUT IT ON A STOCK B20 BLOCK ; STOCK PISTONS. WOULD BE O.K.???

OR WOULD IT CAUSE TO BREAK A VALVE THERE FOR PUT A HOLE IN THE PISTON, BLOW THE ENGIN....??? i REALLY NEED TO KNOW...
THANKS

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SCYRIO &raquo;</TD></TR><TR><TD CLASS="quote">I THINK THERE A GOVE IN THE CYLINDER WALL ON YOUR BLOCK.... BECAUSE THAT WOULD CAUSE SMOKE TO COME OUT YOUR TAIL PIPE ..


PS. DOES ANY ONE KNOW IF YOU CAN RUN A FULLY BUILT GSR HEAD (VALLVES ,VALVE SPINGS , RETAINERS,, AND A SKUNK 2 STAGE 2 CAM , ALSO A PORT AND POLISHED HEAD) AND PUT IT ON A STOCK B20 BLOCK ; STOCK PISTONS. WOULD BE O.K.???

OR WOULD IT CAUSE TO BREAK A VALVE THERE FOR PUT A HOLE IN THE PISTON, BLOW THE ENGIN....??? i REALLY NEED TO KNOW...
THANKS</TD></TR></TABLE>

Hey I'm an '04 Member...

So Do I HAVE THE POWER TO NOMINATE other '04 Members...?

If SO

THIS GUY HAS TO BE IT
hehe

Sightless

 

If it blows more smoke when you accelerate, more than likely you have stuck rings or wrong sized rings or misinstalled rings or something wrong with the cylinder. Most of the time, if it were valve seals, it would smoke on start up or deceleration.

Is it using a lot of oil or are you sure it may not just be running excessively rich?

Just a thought...

 

i'm starting to think now that it's the rings...as i was driving it today, the more i stepped on the gas, the more smoke came out...i also took off the header and there is oil in the port of cylinder 2...it could be the oil ring or something in the block...i guess i just didnt want it to be the rings...damn it...hopefully if it's the rings in that cylinder, we can just pull the head and push the piston out from the top and reinstall the rings...can anyone tell me if that can be a DIY kinda job?...oh and my VSS doesnt seem to wanna work either...oh well, i guess it's back to the drawing board.

 

upon last rebuild of my motor it smoked like a **** and a horrid hammer-banging-on a chisel noise. The clankin noise was from sleeves that were not installed correctly and #1 cylinder had the bottom portion of it knocked off making the pistons slap at BTC. Ne way the smoke was from a ring that had a slight nik off it i guess when they installed them. I would guess rings if you didnt mess with head before you put the motor together.

 

Yes, re-ringing a piston can be a DIY'er job. It's not hard to do at all with engine still in car. Since you have cylinder head off anyway just remove piston/rod assembly out of cylinder and check for scoring in the cylinder or on the piston or if you have had engine sleeved, to ensure that sleeve has not dropped or cracked. I have also seen blocks where a sleeve was installed crooked and caused premature wear on that cylinder/piston. Check also to see if you may have broken or melted ring lands. This is the area on sides of piston between each ring. you'll also need a piston ring installer (about $10-$20 at local Sears or most parts stores) and a ring compressor to reinstall pistons into cylinders (also about $15- $30 at Sears or parts store)

Also, depending on type of rings you get, you may have to file the gaps to fit if they are file fit rings or ensure that you get correct sized rings for your application and follow installation instructions that may come with the rings.

Good Luck!

 

okay i pulled the head off...there's oil on the face of the valves, oil on the back side of the valves, alot of oil on the top of the piston...all in cylinder two...all the others seem to be fine...there's no scoring,grooves, or anything on the cylinder walls...could this be a ring, or valve seals?

 

i say it's a valve problem. we just dealt with the same thing. exactly. think, gooey looking black oil coming out of the exhaust port. naaaaaasty.

oh, i can re-ring a piston.. valve guides = machine shop. if i were you i'd hope it's just a ring. but i'm thinking it's not




Modified by kaj at 3:55 PM 12/23/2004

 

I had the same problem, but mine was do to the fact that at the bottom of the cylinder there was a groove worn into the cylinder. What made the groove is still unknown due to the fact I never took the pistons out. It held good compression and leakdown too. Just make sure you inspect the cylinder wall very carefully. Good luck with your problem.

 

inspected the head and found a valve guide moved about a half inch down inside of the intake port. hopefully that is the cause of all of this mess. their was oil in the intake port leading us to think that thats the problem.

 

yeah...lets hope that's the problem...i really dont have anymore money to dump into that motor.

 

let me know when you guys get it fixed.