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#11
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78 VW Rabbit Diesel TIming Belt/Injector Timing Question
Definitely don't do that. The way the pump is designed . The cam wear
doesn't affect anything its always .83. Your measuring lift. if the cam is worn the .83 will be in a different spot , but the fuel timing and duration will be the same. If you advance it out of limits higher it wont start in the winter. if you lower it , your car will smoke. "Corrado Daddy" > wrote in message ups.com... > >> I do have a question. The Bentley manual says to adjust the dial to >> .83 mm. Since the injector pump is worn, could I increase this >> measurement to compensate for wear, and advance the timing a bit? > > No! A worn pump will only generate less pressure, the timing is > affected by the adjustment you make with the dial indicator. Setting > this value compensates for any wear in the mechanism. A worn shaft > bushing on the pump will cause it to suck air past this bushing instead > of fuel from the tank causing a great loss of power. Make sure all > your fuel line connections from the filter to the pump are snug and not > allowing air to get in. That too will cause a loss of power. > TEMiller > |
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#12
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78 VW Rabbit Diesel TIming Belt/Injector Timing Question
Also , the instrument is sensitive , sometimes when you tighten the fuel
pump down the needle moves. Its because the bolts are too loose. you want it at .83 when your all tight. "Corrado Daddy" > wrote in message ups.com... > >> I do have a question. The Bentley manual says to adjust the dial to >> .83 mm. Since the injector pump is worn, could I increase this >> measurement to compensate for wear, and advance the timing a bit? > > No! A worn pump will only generate less pressure, the timing is > affected by the adjustment you make with the dial indicator. Setting > this value compensates for any wear in the mechanism. A worn shaft > bushing on the pump will cause it to suck air past this bushing instead > of fuel from the tank causing a great loss of power. Make sure all > your fuel line connections from the filter to the pump are snug and not > allowing air to get in. That too will cause a loss of power. > TEMiller > |
#13
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78 VW Rabbit Diesel TIming Belt/Injector Timing Question
I have a question regarding setting the fuel injection pump timing:
I have followed the steps in the Bentley manual. Using the dial, I have found that the injection timing is set to 1.32mm. I have loosened the three allen head bolts on the injector pump plate. I cannot not remove the bolt w/ the yellow paint and the standard type screw head, it's stuck. Do I need to loosen the screw with the yellow paint? Have I loosened the correct screws? Now, how do I adjust the pump down to .83mm? Thank you! Jeff none2u wrote: > Also , the instrument is sensitive , sometimes when you tighten the fuel > pump down the needle moves. Its because the bolts are too loose. you want it > at .83 when your all tight. > "Corrado Daddy" > wrote in message > ups.com... > > > >> I do have a question. The Bentley manual says to adjust the dial to > >> .83 mm. Since the injector pump is worn, could I increase this > >> measurement to compensate for wear, and advance the timing a bit? > > > > No! A worn pump will only generate less pressure, the timing is > > affected by the adjustment you make with the dial indicator. Setting > > this value compensates for any wear in the mechanism. A worn shaft > > bushing on the pump will cause it to suck air past this bushing instead > > of fuel from the tank causing a great loss of power. Make sure all > > your fuel line connections from the filter to the pump are snug and not > > allowing air to get in. That too will cause a loss of power. > > TEMiller > > |
#14
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78 VW Rabbit Diesel TIming Belt/Injector Timing Question
I posted at your other post. Loosen the fuel pump mounting bolts. don't move
the painted one, you removed the wrong bolts. "JH" > wrote in message ps.com... >I have a question regarding setting the fuel injection pump timing: > > I have followed the steps in the Bentley manual. Using the dial, I > have found that the injection timing is set to 1.32mm. I have loosened > the three allen head bolts on the injector pump plate. I cannot not > remove the bolt w/ the yellow paint and the standard type screw head, > it's stuck. > > Do I need to loosen the screw with the yellow paint? Have I loosened > the correct screws? Now, how do I adjust the pump down to .83mm? > > Thank you! > > Jeff > > none2u wrote: >> Also , the instrument is sensitive , sometimes when you tighten the fuel >> pump down the needle moves. Its because the bolts are too loose. you want >> it >> at .83 when your all tight. >> "Corrado Daddy" > wrote in message >> ups.com... >> > >> >> I do have a question. The Bentley manual says to adjust the dial to >> >> .83 mm. Since the injector pump is worn, could I increase this >> >> measurement to compensate for wear, and advance the timing a bit? >> > >> > No! A worn pump will only generate less pressure, the timing is >> > affected by the adjustment you make with the dial indicator. Setting >> > this value compensates for any wear in the mechanism. A worn shaft >> > bushing on the pump will cause it to suck air past this bushing instead >> > of fuel from the tank causing a great loss of power. Make sure all >> > your fuel line connections from the filter to the pump are snug and not >> > allowing air to get in. That too will cause a loss of power. >> > TEMiller >> > > |
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