You better read it againLet me see if I understand you right.
You say that you have 4 cruisers to drive and only 1 exhibits fuel problems.
Then the next sentence you say it's happened to yours also so we went from 25% to 50% in once sentence.
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You better read it againLet me see if I understand you right.
You say that you have 4 cruisers to drive and only 1 exhibits fuel problems.
Then the next sentence you say it's happened to yours also so we went from 25% to 50% in once sentence.
Ok the rest says you're a Texan driving slow on a road trip and you have no data. You realize the temperature at which fuel boils on a mountain is not hot enough to boil in Texas, right? The fuel is still the same temperature.You better read it again
Altitude is another factor, right? Here it's almost sea level and over 95F ambient temp so far this summer. Just one boiling on day-to-day heavy traffic. And 3 out of these 4 including the one which has the issue were in silverton last summer and drove through the engineer and black-bear passes. Used non-ethanol fuel there and had no boiling issues. That's why I'm guessing the one boiling developed a cooling system issue recently.Ok the rest says you're a Texan driving slow on a road trip and you have no data. You realize the temperature at which fuel boils on a mountain is not hot enough to boil in Texas, right? The fuel is still the same temperature.
And that is why I followed your advice about wrapping fuel lines and heat shield on the gas tank by the cats. Solved my vapor lock and fuel boil problem. Replacing vapor canister, fuel filter, gas cap, radiator, etc etc did not stop the issues which I had experienced in Las Vegas heat and Colorado elevation for a good ten plus years. (I have owned my 2006 since January 2007). Best MUD advice I ever followed and there is a lot of good stuff on here.@Asanka of the hundreds of posts in this thread I am literally the only person who has measured fuel temperature. Look for my posts in this thread.
I read your posts and that's why I'm going to put heat shields for and wrap return lines. Really appreciate your effort and contribution here!@Asanka of the hundreds of posts in this thread I am literally the only person who has measured fuel temperature. Look for my posts in this thread.
Good to know! Mine nor the one boiling fuel in Houston don't run into vapor lock or spitting fuel from gas cap. So our symptoms are minor compared to yours. So heat shields and wraps definitely going to help.And that is why I followed your advice about wrapping fuel lines and heat shield on the gas tank by the cats. Solved my vapor lock and fuel boil problem. Replacing vapor canister, fuel filter, gas cap, radiator, etc etc did not stop the issues which I had experienced in Las Vegas heat and Colorado elevation for a good ten plus years. (I have owned my 2006 since January 2007). Best MUD advice I ever followed and there is a lot of good stuff on here.
Engine coolant temp?This finally happened to me, was doing Cathedral Valley Loop trail in Capitol Reef National Park, it was 104F on the gage, when I smelled the gas I pulled over and unscrewed the cap. I had to let the tank off vent for 10m (very loud and a ton of fumes, not the safest situation), the vapor pressure must have been extremely high. I would also have the problem that after long stretches on the interstate, when I stopped to refuel, the pump would keep auto stopping because the pressure was too high for the nozzle I guess and it thought I was already full. I'd have to wait 5-10m with the cap open to get the pressure low enough.
No, sorry that wasn't clear, outside air temp.Engine coolant temp?
This finally happened to me, was doing Cathedral Valley Loop trail in Capitol Reef National Park, it was 104F outside air temp on the gage, when I smelled the gas I pulled over and unscrewed the cap. I had to let the tank off vent for 10m (very loud and a ton of fumes, not the safest situation), the vapor pressure must have been extremely high. I would also have the problem that after long stretches on the interstate, when I stopped to refuel, the pump would keep auto stopping because the pressure was too high for the nozzle I guess and it thought I was already full. I'd have to wait 5-10m with the cap open to get the pressure low enough.
It was clear 104f was parks OAT on dash gauge.No, sorry that wasn't clear, outside air temp.
Keeping tank full can cause issues also. When it heats up it can spout gas when you remove gas cap. Also gas can be forced up vent line and saturate the charcoal canister, which is really not good.I have had my 100 for 4 years and have had this issue at least 3x each summer. This year, I am going cross country towing a teardrop and it has happened twice in NM, and once in AZ on this trip already. All PM has been done, and only have tried a new gas cap added. It is about 90 degrees and 6000 ft driving on I 40. No boiling out but it clearly was venting and started running rough and died. I did something different this time though, I filled up the tank with my Jerry cans in the truck til full and it started running normal again immediately. I think the gas pushed all the excess vapor out of the tank and got it back to normal. So I will just keep bringing extra gas to me which I would anyway .
Filling to top isn't a good idea as others mentioned. But pumping cooler gas into the tank reduces the temperature and stop boiling if you can safely open the cap.I have had my 100 for 4 years and have had this issue at least 3x each summer. This year, I am going cross country towing a teardrop and it has happened twice in NM, and once in AZ on this trip already. All PM has been done, and only have tried a new gas cap added. It is about 90 degrees and 6000 ft driving on I 40. No boiling out but it clearly was venting and started running rough and died. I did something different this time though, I filled up the tank with my Jerry cans in the truck til full and it started running normal again immediately. I think the gas pushed all the excess vapor out of the tank and got it back to normal. So I will just keep bringing extra gas to me which I would anyway .
For a quick test to see if you have issues that need repairing, run a tank of non-ethanol fuel. If it's like my 100 you won't have issues with it, if you do then maybe something needs repairing. When I run the trails in the San Juan's we base out of Silverton where the small station on the main drag carries non-ethanol premium, at least it has during my past trips. That stuff is good even over the high passes on the trails.Subscribed.
In hindsight what I originally chalked up to bad gas was not, and is obviously this. I've read through this whole thread since we're now residents of Telluride sharing time between there and Atlanta. The LC will be primarily residing in CO so I'm paying close attention to this thread and will contribute as much as I can.
For a quick test to see if you have issues that need repairing, run a tank of non-ethanol fuel. If it's like my 100 you won't have issues with it, if you do then maybe something needs repairing. When I run the trails in the San Juan's we base out of Silverton where the small station on the main drag carries non-ethanol premium, at least it has during my past trips. That stuff is good even over the high passes on the trails.