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Old Dec 12, 2025 | 12:29 PM
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Eli.r's Avatar
Eli.r
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What is this?
Trucks running rich and trying to diagnose it. Starts and runs great, but can smell gas.
Trucks running rich and trying to diagnose it. Starts and runs great, but can smell gas.
 
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Old Dec 12, 2025 | 01:22 PM
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Air pump muffler? Seems like it connects to the air piping on back of motor. My truck was making a noticeable blowing sound before I took all that stuff off. Not sure were the noise was coming from though.
 
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Old Dec 12, 2025 | 02:11 PM
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Originally Posted by JS430
Air pump muffler?
That’s what it looks like.

OP, keep looking… The air injection system is not causing the gas smell.
 
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Old Dec 12, 2025 | 02:54 PM
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Have a look at the FPR, the charcoal canister, and all associated vacuum lines.
 
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