When i idle at a red light for a little, then when i accelerate i blue smoke coming from the tail pipe.

Is there a way i can narrow it down to a specific part?

please help i hate it

88 civic auto 4 dr 125k. Mostly city miles

 

its usaully a sign of bad piston rings

 

Piston rings or valve seals. You can determine which is the problem by doing a wet/dry compression test.

 

It's piston rings, valve seals are more of a problem at startup and will stop smoking a little as you drive more.

 

this is true

 

Is it better to replace the Rings or new engine block and pistons

 

haha from google images the piston rings and valve seals doesnt seem to be expensive.

1.how much would this cost to fix including labor?

2would the piston need to be replaced also?

3what do you need to do in order to replace the piston rings?

 

They rip the motor apart. Take out the crank, rods and pistons. Replace the rings, and put everything back togeter, a good time to do bearings since it's already all apart, maybe a new t-belt and waterpump since it's all torn down. Pistons are only replaced if they are burnt, cracked or have a whole in them, and when there's that much damage to the piston, you have more issues then a little bit of smoke.

 

It's cheaper and easier just to buy a complete used engine assembly and swap it in. D15B2 engines are cheap and plentiful.

 

yes those parts are cheap to replace, but it the replacing part that will get you. labor downtime, shoptime ect that will run you into some money, it is just cheaper to buy a new motor or block whatever is easier for you...... plus the parts are cheap but its a major ordeal to rebuild a engine

 

listen, if you have added and intake or headers your probably running rich, don't listen to these people right off the bat. Any up-grade w/o tuning could cause you to run to lean -10 or to rich +13 mabye this is the cause, if you been redlining all damn day and not giving your motor a rest then yes it could be a piston ring, head-gasket or something of the sort.

I also see that you barely have over 100k miles which shouldn't be blown piston rings and you said it's an auto, so most likely that takes away that situation.

 

car is completely stock for daily driving

in order to replace the piston rings, does the entire engine need to be removed?

any estimates of how much a mechanic would charge me?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ck123 &raquo;</TD></TR><TR><TD CLASS="quote">

in order to replace the piston rings, does the entire engine need to be removed?

</TD></TR></TABLE>
No, they can be replaced with the engine in the car.

 

can anyone give me an estimate on how much it will cost to replace the piston rings???? inlcuding labor.

 

how do you do a wet dry compression test? i think my piston rings are blown. but i jsut drove to ct from upstate new york and back and avg. about 40 mpg.

 

CT to keeseville, damn that's a long drive.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ck123 &raquo;</TD></TR><TR><TD CLASS="quote">can anyone give me an estimate on how much it will cost to replace the piston rings???? inlcuding labor.</TD></TR></TABLE>
Call a shop. Honestly it's not hard to do, just do it yourself, you'll learn something and save a lot of money. It can be done in an afternoon.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludesrv &raquo;</TD></TR><TR><TD CLASS="quote">They rip the motor apart. Take out the crank, rods and pistons. Replace the rings, and put everything back togeter, a good time to do bearings since it's already all apart, maybe a new t-belt and waterpump since it's all torn down. Pistons are only replaced if they are burnt, cracked or have a whole in them, and when there's that much damage to the piston, you have more issues then a little bit of smoke.</TD></TR></TABLE>

Its not that easy. What if your cyclinder wall's are out of round or tapered. then they have to bore them out, you have to buy oversized pistons & the rings to accomodate them. Then they measure the crank, if its out of round or tapered on any of the journals, they have to regrind it, get oversized bearings. Oh and dont forget they have to check for warpage on both cyclinder head and block. I've personally rebuild two d16a6's and one of them had over 200k on it and i did not have to resurfaced the head or deck the block or regrind the crank. Good luck with your decision!

 

[QUOTE=downest]CT to keeseville, damn that's a long drive.


not really it's about 250-300 miles where upstate you from?

 

320k u got a golden civic there

any rebuilds or swap on that civic?

 

yea i guess the tran was rebuilt before i built it