Fuel Smell Disappear after A/C Turns On
Fuel Smell Disappear after A/C Turns On
I had tons of fuel odor escaping into the cabin as I drive (especially when adding Techron (and recently BG 44K), however the smell disappears after I turn on the A/C. Is the cool air masking the toxic smell or is there some mechanism that stops the fuel smell from entering the cabin after the A/C is turned on?
Q45tech wrote:99% they are in a rubber fuel hose [under/feeding plenum area]..........7 hoses in front and a few under rear subframe.
Are the hoses you're refering to included in the "under plenum hose kit - '90-'93 Q45" offerred by Joe (Everything N/I)? I'm unable to get any further details on what the kit actually includes via the website. If this kit includes the 7 hoses you're refering to plus a few others under the rear subframe, I'll make that call right away. Is a rail flush or anything else needed before replacing the hoses?
Its the under hoses . . . . alos, I bet the O-rings on the fuel injectors have had it by now if they have not previously been replaced. High pressure there and a very likely source. It does not take more than a few drops of premium fuel to stink up the cabin!
Call Joe on the fuel hoses. Also, be sure to order the O rings at the same time . . . oh yes, also if you have the plenum off do the knock sensors and harness . . . . we have all been there at one time or another!
Call Joe on the fuel hoses. Also, be sure to order the O rings at the same time . . . oh yes, also if you have the plenum off do the knock sensors and harness . . . . we have all been there at one time or another!
-
boomstriker
- Posts: 64
- Joined: Thu Dec 04, 2003 9:30 am
Some manufactures use the spring-type clamps under the hood. They are a wonderful design that provides tension on the rubber hose even years later after the rubber compresses and shrinks. They are great to use in areas that are inaccesable to re-tighten later with ease. Some guys don't like them because they're not familier with them, or maybe cause they don't have the pliers to R&R them.
Nissan uses these type of clamps on the coolant hoses, but uses stainless screw-type clamps on the HP fuel hoses. Although they are strong, secure and reliable clamps in the short haul, they don't compensate for the rubbers shrinking and compressing and will eventually seep fuel causing the smell in the cabin.
If the hose is in good shape, just tighten the clamp and the leaks will stop. If they are hard and brittle or they're already tight and leaking, they will need to be replaced.
Very often I have customer cars come in having screw type clamps replacing the original spring style on radiator, fuel, 8mm coolant, and PS return lines. Usually they are replaced with the new hose, but no matter how tight they are cranked down, within a year or two they will be leaking because the rubber compresses, but the clamp doesn't. Unless you like to re-tighten hose clamps every year and having leaks, leave the spring ones on there.
Kirk
Nissan uses these type of clamps on the coolant hoses, but uses stainless screw-type clamps on the HP fuel hoses. Although they are strong, secure and reliable clamps in the short haul, they don't compensate for the rubbers shrinking and compressing and will eventually seep fuel causing the smell in the cabin.
If the hose is in good shape, just tighten the clamp and the leaks will stop. If they are hard and brittle or they're already tight and leaking, they will need to be replaced.
Very often I have customer cars come in having screw type clamps replacing the original spring style on radiator, fuel, 8mm coolant, and PS return lines. Usually they are replaced with the new hose, but no matter how tight they are cranked down, within a year or two they will be leaking because the rubber compresses, but the clamp doesn't. Unless you like to re-tighten hose clamps every year and having leaks, leave the spring ones on there.
Kirk