93 civic d15b7 oil burning and pcv help - Honda-Tech - Honda Forum Discussion

Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

93 civic d15b7 oil burning and pcv help

Thread Tools Search this Thread
Old 10-13-2011, 02:37 PM   #1
Honda-Tech Member
Thread Starter
Join Date: Oct 2011
Posts: 72
Default 93 civic d15b7 oil burning and pcv help

Hello, I have a 93 honda civic with a d15b7 engine. ever since i bought it about 8 months ago it has always had blue smoke come out of exhaust only at high rpms (about 4000rmps). About a week ago I went on the highway and after about 170 miles a water hose busted and the car heated up, the head gasket blew, anyway I got the car back home on tow truck, I didnt even try to start it, I put the new head gasket on, checked the head, and changed the valve stems. Now I have it running good again but when I put everything back together i broke the oil breather hose that connects to the intake manifold. It runs well without it, I just clogged the intake manifold side with plastic so no air gets in. I bought the hose and when I connect it to the pcv valve and turn on the car the rpms go way up, it seems like the oil breather has a hole or something where air can get by. My first question is: is it ok to run without it connected? what I have read is that that pcv valve is there to let out any extra air in the crank case, so I would guess that it doesnt need to be connected.

And one other question, its what is bothering me the most. The car only sometimes smokes at low rpms now, but it is only sometimes. Yesturday I drove awhile and no smoke out, only at high rpms like I said before. And today I drove the same amount and half way to my destination it started smoking even at idle (700 rpms). I tried to see if there was anything different that I do when it smokes but I do the same drive, the same roads. What can cause the car to smoke at low rpms only sometimes?

I cant check compression since I am in a town where nobody has good tools. I know that my smoking problem at high rpms is indeed the piston rings, but why does it smoke only sometimes at low rpms? any help would be great. thank you.
liquidzorch is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Burning LOTS of oil, help? ehart13169 Honda CRX / EF Civic (1988 - 1991) 4 04-05-2012 11:10 PM
NEED SERIOUS LS VTEC HELP eg6nike All Motor / Naturally Aspirated 5 03-22-2010 06:04 PM
popping while trying to start ? speedyclack Acura Integra 6 11-17-2009 07:47 AM
hey guys! can you give me any opinions on whats wrong with my motor? thanks jdmSohcZC Tech / Misc 0 08-26-2005 11:38 PM
blue smoke when I shift Tuney Tech / Misc 2 04-15-2003 08:40 AM

2003, 93, burning, change, civic, connect, d15b7, engine, honda, hoses, intake, manifold, oil, pcv, smokes, valve

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -8. The time now is 09:57 PM.

  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: