International truck
If truck sits for 10 15 minutes it loses air pressure to brakes, same thing when idling... Low air warning turns on and it starts dropping
Although when driving, no problems, air pressure stays at about 130 psi
Also don't think there's an audible air leak as I can't hear anything but may be wrong
It is a straight truck
Any help would be great
Losing air break pressure while ilding
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Goodguy88, May 30, 2017.
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Simple answer.
You have a air leak.
Now the fun part is trying to chase it down.
Spray all fitting and air lines with Windex or soapy water and look for bubbles.
See bubbles, fix leak.passingthru69, Goodguy88 and daf105paccar Thank this. -
Listen for when it cycles off again or finishes building pressure and if u here a loud pop or hiss check the slack adjusters for play. I think I remember having a similar problem in same setup before. Could be bent or corroded bleed valve. Best bet is to let it build up pressure. Turn off truck and crawl under it and do like post above said to do.
Goodguy88 Thanks this. -
100 percent it's a leak? Problem is this truck is so loud ...That's probably why I'm not hearing anyhing
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Goodguy88 Thanks this.
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What year and model is this truck? Ant spec'd add ons? 6 wheeler?
Goodguy88 Thanks this. -
It's a international workstar 2011 triaxle
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Now that you mention it I don't think it ever cuts out air pressure. Will check tonight
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Probably over 400hp not sure. Will try these methods and see what happena
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Build up your pressure and turn the truck off. Turn the key to auxiliary and press the brakes once and leave it held down. While u do this keep ur eyes on the air gauge and determine how fast it depletes can sometimes give u and idea if it's a major or small slow leak.
Goodguy88 Thanks this.
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