Wbburns Posted November 6, 2020 Share Posted November 6, 2020 Hope someone can shed some light on my problem. I recently bought a ‘04 cv713 dump truck that had been sitting for a while. Had to put a transmission in it and finally got it on the road. The first day, lost air and had to replace air compressor. Shortly after installing air compressor (15 min), letting the truck idle, it began miss8ng terribly and blowing blue smoke. Changed fuel filters (don’t know when they were changed last, so I knew it would only help) and found lots of water. Drained all the fuel in both tanks and refilled. Next day STILL had water in fuel and fuel tanks. Drained off water again (10 gallons of fuel before it drained clean). Restarted and ran for a day. End of day, started missing again. Parked, let rest and drained another 10 gal of fuel/water. It must be getting in from somewhere. Any ideas where? Quote Link to comment https://www.bigmacktrucks.com/topic/64826-water-getting-into-fuel-tanks/ Share on other sites More sharing options...
joes mack Posted November 6, 2020 Share Posted November 6, 2020 do you have to add antifreeze to the truck. and or do you haul in wet areas or go through truck wash. Quote Link to comment https://www.bigmacktrucks.com/topic/64826-water-getting-into-fuel-tanks/#findComment-463528 Share on other sites More sharing options...
Wbburns Posted November 6, 2020 Author Share Posted November 6, 2020 I’ve added both antifreeze and water (lost about 4-5 gal when disconnecting lines to install air compressor pump). Don’t haul in wet areas or truck wash. Water isn’t getting in through the top of the tank for sure. Quote Link to comment https://www.bigmacktrucks.com/topic/64826-water-getting-into-fuel-tanks/#findComment-463535 Share on other sites More sharing options...
Mackpro Posted November 6, 2020 Share Posted November 6, 2020 The fuel return line above the air compressor swapped with the coolant line to the air compressor? I have seen it happen 2 Quote Link to comment https://www.bigmacktrucks.com/topic/64826-water-getting-into-fuel-tanks/#findComment-463575 Share on other sites More sharing options...
Brian L Blaylock Posted November 6, 2020 Share Posted November 6, 2020 Does your truck have fuel heaters in the fuel tanks if so you could be getting coolant from one of them if it is cracked Quote Link to comment https://www.bigmacktrucks.com/topic/64826-water-getting-into-fuel-tanks/#findComment-463579 Share on other sites More sharing options...
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