my motor doesnt start smoking until it is fully warm and after driving for a bit, is it the piston rings or seals? pulling the head tonight if its the seals.... thanks


Ok just performed a compression test and here are the results...

Cyl. 1 = 190 psi
Cyl. 2 = 190 psi
Cyl. 3 = 195 psi
Cyl. 4 = 200 psi


Modified by LShatchie at 5:15 AM 8/6/2005

 

Pistons rings are gone rebuild time

 

rings blue=oil
white=coolant
black=rich

 

ok i know what blue smoke means, i just want to know if its the rings or seals.... the car still has all of its power and drives fine, it just smokes

 

 

not uncommon for a honda motor to have a fried oil ring but good compression rings.

 

so doing a compression test isnt going to help to much?

 

you need to do a leakdown test for a better result

 

how exactly is a leak down test performed?

 

Ok just performed a compression test and here are the results...

Cyl. 1 = 190 psi
Cyl. 2 = 190 psi
Cyl. 3 = 195 psi
Cyl. 4 = 200 psi

This is on a b18a1... does this information help any?


I myself think its the valve seals, because if it were the piston rings wouldnt it smoke all the time? I just dont want to pull the head and replace the valve seals when it could be something else. I just need some backup info before I do anything drastic.

 

 

PCV Valve ??? Doubt it but eh ..Worth a shot

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FortunateFool. &raquo;</TD></TR><TR><TD CLASS="quote">PCV Valve ??? Doubt it but eh ..Worth a shot</TD></TR></TABLE>

what exactly do you mean?

 

just checked the pcv valve out and it seems fine, so i dont think that it is the problem

 

<U>Do a leakdown test.</U> it will possibly determine where you are burning oil from. but since you do have good numbers across the board, i'd say your valve seals

 

i dont have the time or the money to waste to do a leakdown test right now... im just guna replace the valve seals and hope that what it was

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LShatchie &raquo;</TD></TR><TR><TD CLASS="quote">i dont have the time or the money to waste to do a leakdown test right now... im just guna replace the valve seals and hope that what it was </TD></TR></TABLE>

then why bother asking us? do you know what a leak down test is? it can be done for little to no money. good luck replacing your valve seals.

 

well if you knoticed, i already asked that question a few posts up ....<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LShatchie &raquo;</TD></TR><TR><TD CLASS="quote">how exactly is a leak down test performed?</TD></TR></TABLE>

its so hard to get some help on HT anymore...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LShatchie &raquo;</TD></TR><TR><TD CLASS="quote">how exactly is a leak down test performed?</TD></TR></TABLE>

Basically the cylinder is filled with compressed air and you have a guage hooked up to the line and see how much leaks trough.

Thats what i found out by browsing trough a few threads

 

Ok well i didnt do the leak down test, I just took the head off and took it to a machine shop by me. They are going to inspect it first to see if the guides were bad or if the seals got hard/cracked, then they are going to call me back. The pistons look pretty good they dont really have much carbon on them, just dark from all the miles and over the years. All 4 cylinders still have the factory cross hatching too.

 

on old motors, you might get some white smoke at high rpms, but it looks like your rings are shot
you can run it for a while, if you don't beat on it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MugenHonda &raquo;</TD></TR><TR><TD CLASS="quote">on old motors, you might get some white smoke at high rpms, but it looks like your rings are shot
you can run it for a while, if you don't beat on it</TD></TR></TABLE>


Why would my rings be shot? I dont understand....this motor only has 75k on it, just from sitting for a year and a half?

Edit: The motor came from my friends friend's 93 integra LS with 75k, the teg was totaled so my friend scooped it up for a good price and he had it in his garage for about a year sitting there because he was planing on building it and boosting it, until I decided to buy it and it sat for another 6 months.

 

your pcv valve may look fine but it might be frozen on the inside. had the same problem, spent $3 on a pcv valve and the problem was solved(b16a motor only had alittle over 50,000mi on it.).

 

the pcv valve is only like a year old, and I tested it and was fine...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MugenHonda &raquo;</TD></TR><TR><TD CLASS="quote">you can run it for a while, if you don't beat on it</TD></TR></TABLE>

are you talking about how it doesnt smoke for a little while?