i have a 2000 civic si that had been sittin since 07. just swap out the engine with a 99 si engine a couple wks ago now CEL is on checked code possible vac leak. how do you find where it is? the honda place is gonna charge me $90 diagnostic fee and what ever else. i already know the diagnosis i just want to fix the problem. i dont have that kinda money right now since ive been laid off for 4mos please help.
my bro took it to a friend of his who has diagnostic device. he didnt tell me what code no# it was jus that there was a vacuum leak. thanks for all the replies
I don't know of a CEL code that specifically indicates a vacuum leak. Usually such a CEL code will include a vacuum leak as one of the possibilities. I mention this to you just in case you don't find the expected vacuum leak and have to look elsewhere.
did he erase the code?
if not take it to autozone
they will scan it and give you a print out of the possibilities of the cause
i have heard of people spraying carb cleaner to help find vacuum leaks
i just look... it's not that hard if you have a diagram
95 civic ex- stolen 04/22/2008 rebuilt and back on the road 10/23/2008
There is no code from honda that is actually for a vacuum leak at the code name
"So your going to tell me that a type r mani fits on a B16/B17 but not the B18C1 GSR? How does that makes sense? I guess Ill double check. Is it a civic type R or integra type R manifold? Let me know so I can help you get your facts straight."
yeah i don't really like the carb cleaner trick i mean it works great if your leak is on the top side, but if the leak is somewhere on the bottom it doesn't really work. What works for me is just running my fingers along every possible spot that could leak. You can usually feel it. Have you tried covering your throttle body with the car idling to see if it dies.
Rides: 2004 TL NBP w/navigation; 2006 R6 Ravens Edition; VW Street Legal Sandrail; 2000 Freightliner Century Class Custom Built Toterhome
Get that code. Then if the causes are a possible vacuum leak, and assuming you have checked all hose connections, the two best tools I have found are:
1. an ordinary length of tygon tubing, around 3/8" diameter, holding one end to your ear and the other to suspected leaking locations. Like a buck at Home Depot for a few feet. Very effective at amplifying leaking air. You can buy an automotive stethoscope pretty cheaply, too, for this. I found leaks around my throttle body gasket using this.
2. for hose checks, a hand held Mityvac (or other maker) vacuum pump. Indispensable. I think Autozone and Harbor Freight now sell these for around $15.
I do not like spraying carb cleaner around. It leaves a residue that is annoying to clean up.
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