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92 Dakota Flunked Smog

From : fmb

Q: i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico .

Replies:

From : peterd

on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak .

From : peterd

on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! .

From : peterd

on wed 3 dec 2008 160247 -0500 roy roy@home.net wrote on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! i owe ya this one buddy! looking for a fuel vapor detector try a friggin match!! gbmfg as always use all safety precautionsg hey i prefer my benzo-matic torch longer flame easier to get into tight places... some idiots in the town next door decided to cut the fuel tank off a truck the other day. about $300000 in damages including a bunch of antique cars. idiot holding the tank at the time drove himself home. cops went to his house offered to take him to hospital. no thanks man ill be ok... i hear he is out of the icu now! .

From : roy

on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! i owe ya this one buddy! looking for a fuel vapor detector try a friggin match!! gbmfg as always use all safety precautionsg .

From : peterd

on wed 03 dec 2008 115231 -0500 steve w. csr684not@yahoo.com wrote peterd wrote on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! you will if your vehicle has obdii the same test is part of the evap test that runs on your vehicle. it is done with engine vacuum. however it is also one of the tests that takes specific conditions to run. they use the nitrogen test because it may not have run. a 92 dakota doesnt have odbii... .

From : steve w

peterd wrote on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! you will if your vehicle has obdii the same test is part of the evap test that runs on your vehicle. it is done with engine vacuum. however it is also one of the tests that takes specific conditions to run. they use the nitrogen test because it may not have run. -- steve w. near cooperstown new york .

From : e frank ball iii

peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. -- e frank ball frankb@sonic.net .

From : fmb

on 03 dec 2008 011914 gmt frankb@sonic.net e frank ball iii wrote peterd peter2@hipson.net wrote on mon 24 nov 2008 205841 -0800 fmb fmb@sbcglobal.net wrote i got this truck back from my kid cause it wouldnt pass smog and new cars were calling to him. he said what didnt pass was the vapor return system has a leak. i pressured up the fuel tank with an air hose excess pressure passing past the small rag and used soapy water nobody sells snoop around here to look for leaks in any return lines. no help. it is a 92 dak le with a small 6 cyl and auto. is there something that goes bad a high percentage of the time that i can look at any other test i can do all the hoses appear to be in good shape. fmb north mexico how are they testing this on a pre-odbii vehicle if i understood what test they were doing i might be able to offer advice but since emissions testing here is straight odbii so 96 and newer... im a bit lost. can you describe the test used or what they used to determine there was a leak they pressurize the gas tank with 1 psi of nitrogen and do a leak down test thats from the tech at the smog station. they have a machine that does all the work they just hook it up and press a button. ah not that id ever consider that a valid test... i see. ok what you need to do is to accurately pressurize the tank to the 1 psi spedified and use a hydro-carbon sniffer gas detector! to find the leak. there are many tools that will allow you to do this though you probably wont find one in your home shop! hot dang why didnt i think of that. duh ill borrow an itx from work tomorrow and sniff for the leak. thanks peter. fmb north mexico .