EJPut Posted May 21, 2004 Report Share Posted May 21, 2004 I barred the engine over on the crankcase pulley and it went in both directions with just a few lbs of resistance so I guess it is not siezed. Now, my problem is how and where is the fuel rail leaking. It was at the shop for two weeks and the guy could not start it for another two, back to my house it was towed and, of course, the manifold is filled with gas again!!! I did notice that the MAP sensor rubber that protects the sensor was expanded and cracked, probably from gas, which lead me to inspect the underside of the manifold cover. It appears that the leak may be coming from the FPR as the gas is spewing out which is how it got onto the MAP sensor (which is above the fuel rail) and caused the deterioration. Can the FPR leak that much where it would flood the manifold??? When I was first diagnosing the problem the FPR did not appear to be leaking, I will test it again. Do I need to by a new MAP Sensor?? Thanks for the help Eric Link to comment Share on other sites More sharing options...
EJPut Posted May 21, 2004 Author Report Share Posted May 21, 2004 I just had my wife energize the fuel pump. It is not the FPR, it is leaking where the fuel rail starts to get the fuel from under the manifold. Does anyone have the fuel rail part number for my 93 STS? It appears I will have to put in a new one. Thanks, Link to comment Share on other sites More sharing options...
growe3 Posted May 22, 2004 Report Share Posted May 22, 2004 I don't have a number, but it will cost about $210 at: GM Parts Zone Online Drive'em like you own 'em. - ....................04 DTS............................ Link to comment Share on other sites More sharing options...
EJPut Posted May 22, 2004 Author Report Share Posted May 22, 2004 Upon further investigation I found that the o-ring that sits on the o-ring retainer was split. I believe that is what is causing the leak. Link to comment Share on other sites More sharing options...
EJPut Posted May 23, 2004 Author Report Share Posted May 23, 2004 Absolutely! Hopefully they sell the o-ring seperately..... Link to comment Share on other sites More sharing options...
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