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Old 08-10-2008, 08:01 PM   #1
raiders3581
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Flooded Evap canister?

Ok, I am lost. I have a 87 r10 350 tbi with dual tanks and last weekend was out with the wife coming back from lunch and my truck just died. After popping the hood i noticed a heavy gas smell and saw the evap canister was flooded with gas. Gas was coming out of the line marked air cleaner. I removed the line marked tank and gas was in the line. After a tow home and cooling for a while I inspected the truck and noticed the vacuum line to the egr bleed solenoid had a hole. I replaced the line and the solenoid to be safe. After attempting to empty canister I decided to change the cannister. Before installing canister I wanted to be sure it wouldnt flood again. I blew air through the line marked tank and gas came out of the driver side tank. This seemed odd since I only use the passenger side tank because I inherited the truck and for some reason was advised not to use driver side. On the advise of a friend I left the truck over night with the gas caps off to let system bleed any vacuum off. I had tried to add gas to driver side tank about a month ago and it wouldnt run. I only added about two gallons. So after blowing air through the line till nothing else came out i installed the new evap and drove it today about 10 miles and parked it and when I came out to leave it drove about a half mile and the acted like before like it was flooded when I pushed on the accelerator. If I start it it will run fine till I push gas. After I pulled over and popped the hood same thing new canister flooded with gas. It will start, idle for as long as I want but push the pedal and it starts chugging and black smoke. I did add gas but didnt top off and only in pass tank. So I removed canister plugged lines and drove home. This is the strange part. I parked truck and heard a ticking or knocking hard to describe. So I took off driver side gas cap and gas comes poring out. I pull off passenger side cap and suction bleeds out. WTF? This is not my daily driver but I though I had noticed mileage getting worse. I did recently replace oxygen sensor if it matters. I also removed fuel pressure regulator to inspect and it is intact. Help me before I blow something up.
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Old 08-10-2008, 08:28 PM   #2
blacktj01
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Re: Flooded Evap canister?

My money is on the tank selector valve.



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Old 08-10-2008, 09:04 PM   #3
raiders3581
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Re: Flooded Evap canister?

Where is it at?
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Old 08-10-2008, 09:17 PM   #4
blacktj01
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Re: Flooded Evap canister?

Under the bed on the passenger side frame rail next to the gas tank.

Read this post

http://67-72chevytrucks.com/vboard/s...selector+valve

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Old 08-10-2008, 10:08 PM   #5
raiders3581
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Re: Flooded Evap canister?

Thanks guys I will check during week
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Old 08-18-2008, 12:57 AM   #6
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Re: Flooded Evap canister?

Looks like you were right thank you. Bought the valve at napa had it installed at pbs charged 1 hour labor was better than laying in the drive way with gas in hair. Thanks again
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Old 08-18-2008, 10:39 AM   #7
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Re: Flooded Evap canister?

so have you tried using the drivers side tank since the selector was replaced?
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Old 08-18-2008, 03:12 PM   #8
BoeJaker1976
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Re: Flooded Evap canister?

the best place for that canister is in the trash. cap the lines and you wont have the problem anymore. then you'll have to deal with the other problem (inwhich im glad i dont have to deal with anymore) CALIFORNIA EMISSIONS!!!!.
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