dennis

Noticed some smoke recently. Didn't think it was rings since the engine has about 1500 miles on fresh bore and hone with new CPs and rings. Never dealt with a bad valve seal, but doesn't surprise me since this head sat for a while before it was put in. What do you think? It's the #1cyl, I noticed some oil soaking around the ex mani and after looking in, can see sludge around the stem as well as gasket, all other ex valves look good. Haven't seen intake valves. Haven't performed leakdown yet either, might buy the tools tomorrow.





In comparison, here's cyl #2

B20luda

well i have the same prob right now.... when does it smoke...at idle? while driving/gettin on it? usally if its while your idling only its a valve seal...while driving or always smoking.. possible ring problem...on my car i only had a sign of oil on 1 of the valves per cylinder..if it was from the rings...it would be hard to see it in the exhuast port seems how its being burned....unless it was really bad.. also if theres oil build up on the bottom of the valve guide...then its prolly the valve seal...hope this helps some...

dennis

Yeah, I'd really hate for it to be rings and I don't think it is since they're so new and I broke it in well. I haven't noticed a lot of smoke. The first time I noticed it was revving it hard in my driveway up to redline. I did notice some smoke today when I puposely revved it to redline and let it deccelerate. Most was on decelleration it seemed.

It's hard to tell in the pic, but there is some sludge and the back side of the valve and the stem itself.

I got the longblock from a junkyard about 3 years ago (not sure how long it sat there, but I think they said it had about 60k miles on it). It was just recently assembled 1500 miles ago. The bottom end was bored and fitted with new pistons / rings / bearings / seals, etc.., the head was untouched. I'm guessing some of the seals dried out - I hope.

dennis

bump for any other suggestions

legendboy

Blowby time! Check rings!

lsv_gsr

bumb

ATgrills.com

My exhaust valve seal in cylinder leaks a little, no biggy still retunned the car to 340WHP@15psi....

over the winter ill redo the head but its nothing to worry about!

hotrex

having a similar problem.

my gsr running 11 lbs. no smoke at idle, no smoke at part throttle. but when i mash it, i see a lil bit of smoke behind me..

did a comp test looked like this.

186 182 185 185

plugs look nice and golden brown, a/f ratios of 11.8 to 12.1 under boost.

motor does have 147k on her, dynoed 319 hp 249 tq. the lil bit of smoke annoys me, judging by the comp test, the motor seems to be healthy, i am getting 22 inchlbs vac. at idle and 24ish under decel. so, what do u guys think?? im guessing blowby, perhaps i need to vent the crankcase better??

ATgrills.com

running rich,,, dont worry about it...

Btothe3rdDegree

i have the same problem and i am not runnning rich

AccidentproWn

I got a nice smoking problem on my turbo accord too :-p
I'm 90% certain it's my valve seals. It only smokes right after letting off the throttle, and a little while idling after letting off the throttle, and a little when shifting.

I don't plan on replacing them right now. Gonna build a block on the side and replace them when I swap it in.

EDIT: Oh yeah I did a comp test and it turned up 180 across all 4 cylinders.

How's your PCV system routed?

DurboDug93

My car will puff blue smoke after sitting at idle for about 30 seconds. Doesnt smoke any other time. I guess it the valve seals. How much does it cost to get the valve seals replaced?

forcefedh22

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DurboDug93 &raquo;</TD></TR><TR><TD CLASS="quote">My car will puff blue smoke after sitting at idle for about 30 seconds. Doesnt smoke any other time. I guess it the valve seals. How much does it cost to get the valve seals replaced?</TD></TR></TABLE>

Mine does the same thing.

Civicman86

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hotrex &raquo;</TD></TR><TR><TD CLASS="quote">having a similar problem.

my gsr running 11 lbs. no smoke at idle, no smoke at part throttle. but when i mash it, i see a lil bit of smoke behind me..

did a comp test looked like this.

186 182 185 185

plugs look nice and golden brown, a/f ratios of 11.8 to 12.1 under boost.

motor does have 147k on her, dynoed 319 hp 249 tq. the lil bit of smoke annoys me, judging by the comp test, the motor seems to be healthy, i am getting 22 inchlbs vac. at idle and 24ish under decel. so, what do u guys think?? im guessing blowby, perhaps i need to vent the crankcase better?? </TD></TR></TABLE>

I have the same damn problem. its getting on my ******* nerves too

Btothe3rdDegree

anyone have hesitation in first gear from a stop? or hard starts?

hotrex

nope
my car starts after like 1/4 turn from the starter

sporkcrx

I would be careful to all who are experiencing this problem. My old engine use to do the same, if I sat at idle for a while, then go, it would give out a puff of smoke. That's basically the only time it smoked. It was my #1 cylinder, I could tell by the plug it burned oil. Well that's the cylinder that later on blew it's ringlands, and detonation destroys ringlands. My guess is enough oil would get in there that it lowered the octane enough in that cylinder that it detonated and did that. My a/f's were in the high 11's, low 12's at all times (wideband was in the downpipe) so it must of been averaged out with that one cylinder running lean. Lesson learned I guess. I also rebuilt the engine a 2 or 3 years before that, so I dont think it was blowby.

If it was me, I would replace them. You don't have to take the head off to do it if you have the right tools. Just try and be careful when getting the old ones off, that they don't break into pieces and fall down an oil passage and into the pan.

Burke

mine does the same things. just rebuilt the bottom end, and put it together and it smokes like a madman in high vac. pretty sure its an intake valve seal. under normal driving, no smoke. oh well, i knew i should have replaced those in the head when it was off
no im trying to find antoher head to get done and then swap in so i dont have much dowtime.
hell im kinda getting used to the burning oil smell

dennis

Wow, blast from the past...

Anyway, my problem was due to me getting the rings out of line when installing #1 piston.

I pulled the head / oil pan and took the piston out and got everything sorted out - also replaced the valve seals while the head was out You guys should replace your valve seals anyway if you have any question as they're so cheap and pretty easy to do.

blackeg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hotrex &raquo;</TD></TR><TR><TD CLASS="quote">having a similar problem.

my gsr running 11 lbs. no smoke at idle, no smoke at part throttle. but when i mash it, i see a lil bit of smoke behind me..

did a comp test looked like this.

186 182 185 185

plugs look nice and golden brown, a/f ratios of 11.8 to 12.1 under boost.

motor does have 147k on her, dynoed 319 hp 249 tq. the lil bit of smoke annoys me, judging by the comp test, the motor seems to be healthy, i am getting 22 inchlbs vac. at idle and 24ish under decel. so, what do u guys think?? im guessing blowby, perhaps i need to vent the crankcase better?? </TD></TR></TABLE>

hotrex im in the same situation as you, even my comp #'s are the same as yours, but mine is on a b18b. before i boosted my car would burn oil to a noticeable amount on the dipstick, now it doesnt. i still smoke while boosting, and for a short time after boosting. the most annoying part is the ******* oil smell.

i am saying its my valveseals. my motor has 200k miles, but the head appears to have been hot tanked somewhere less than 25k miles ago, and im betting that the valveseals were not replaced after the tanking. my catchcan is bone dry and my pcv valve just has the smallest bit of oil on it

fastcrxva

anyone have hesitation in first gear from a stop? or hard starts?


mine does. hard starts not so much. but the 1st gear the yes. why is that?

fastcrxva

bump

SPOOLINmatt

3k on my new engine. the machine shop SAID my valve stem seals looked good but i dont know. If my car idles for 5 minutes, then it starts to puff oil smoke. right when i start driving it, it doesnt do it anymore AT ALL. when i decel and then hit the gas a puff will come out but thats it. when i decel though it doesnt smoke. when i start off from a red light it puffs one little puff and then nothing else. its nothing serious in my opinion, engine is running great, no problems, gotta leak from either my return line on the pan or the gasket, very small, trying to figure out which is leaking

fastcrxva

Thats what mine is ding now...very little smoke. going to do a compression test toady