I have an ISX 550 Cummins engine. It is not getting enough boost. Only about 12 pounds of pressure. I found a crack in the air to air charger and replaced it. Still not getting enough. Any ideas?
Cummins engine not enough boost
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Richard52, Feb 18, 2014.
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did you check your rubber boots going to the air to air
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check the hose at the air compressor intake. it will rip on the back side
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Check the map sensor, prolly packed full of carbon. Check the exhaust back pressure sensor on the thermostat housing too. Also may need to run a turbo test through insite. If the vanes are sticking it may cause this issue too
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