01-21-2012, 06:42 AM
I smell fuel inside the cab in the winter time and then when the weather warms up it seems to go away. I've looked for leaks around the fuel rails and don't see anything. Anybody have any ideas that I should look for? Thanks
01-21-2012, 02:26 PM
I'm thinkin you have a leak in your EVAP system by the charcoal canister and the fresh air coming in is picking up the gasoline odor and dumping into the cabin. If there is any type of EVAP leak, you will get a OBD check engine light. The difference between summer and winter temperatures may cause the odor to hang around longer and get a chance to reach the air intake. You can try to turn your air control to recirculate to see if the odor goes away.
If your air recirculation is on and fuel odor is still in the air, check other areas... gloves, carpet in the back where gas cans were sitting, etc.
All fuel lines are outside the vehicle and the only way to smell fuel is if it is already in the car or it is coming through the fresh air vent behind the glove box.
01-21-2012, 06:38 PM
After further looking, I finally saw a drop of fuel come out of the top of one of the fuel injectors. I ordered a fuel injector o-ring kit. Does anyone know when these leak, is it usually only the o-ring or is the injector bad? It seems to run fine, I just have the leak. Also, if one is bad, should I replace all 8. I also have 2001 Tundra and have never had a problem with these, so just wondering if this is an isolated problem or other people have had the problem
01-23-2012, 08:19 AM
I just noticed this with my new-to-me 2004 Sequoia last week. It was a cold day, around 15 degrees out, started it and went out scrape the windshield and smelled gas. I will check my injector o-rings to see if they are leaking. Makes sense, cold weather makes the o-ring shrink up and lets them leak.
Let us know if it fixes your problem.
01-23-2012, 11:33 AM
You can find cracked injector housings or leaky o-rings by using a hand-held emissions tester. They are easiest to find if the engine is dead-cold rather than warm...which is why you smell it in the winter. This might require you leaving it overnight at the shop to have it tested cold.
01-24-2012, 12:36 AM
I've had my injector o-rings and seats changed twice on my '03 with 87K. Dealer did it first time under extended warranty. Local shop did it second time. the ones they gave me back were totally dried out and cracked. I had them all changed as doing one the whole fuel rail has to come off anyway so might as well do at least that side but I did both. Didn't take long shop labor time as the rail unbolts quick/easy. Don't forget you need top and bottom seals and o-rings so it gets changed at rail and at intake.
I'll need to hunt for actual parts list and price (stuff is packed up trying to sell house). I also have pictures somewhere
01-28-2012, 10:39 AM
Replaced o-rings today and problem solved. Bit of advice, first ones I purchased were Fellpro Brand from O'Reilly Auto Parts. I put them in and had worse leak than before. Examined and they were too big. Went to Advance Auto and ordered Beck/Arnley brand and no problems.