1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

12a rebuild

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Old 03-09-16, 12:49 PM
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12a rebuild

my motor wont start it has 75 compression on both sides it has a weber and bridge port ive been trying to start it i dont know if its because of the cold weather but it sounds like it wants to start. ive heard people pull start them is that a good idea. and is it true that the fuel pump only starts when the car is running i heard its some kind of safety feature.
Old 03-09-16, 12:51 PM
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No issue with pull starting.
Old 03-09-16, 03:03 PM
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The fuel pump will run, dont worry. You can even hear it if you turn the key
Old 03-10-16, 08:41 AM
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Originally Posted by -xlr8planet-
The fuel pump will run, dont worry. You can even hear it if you turn the key
thank you guys thats alot of weight off my shoulders. ill try the pull start this weekend hopefully it works
Old 03-10-16, 09:01 AM
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84-85 years had this so called safety feature. It can be bypassed for testing. Then leave it bypassed if that suits you. Earlier models didn't even have this feature and they were safe enough.
Old 03-10-16, 12:58 PM
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Originally Posted by Jeff20B
84-85 years had this so called safety feature. It can be bypassed for testing. Then leave it bypassed if that suits you. Earlier models didn't even have this feature and they were safe enough.
Could you please elaborate on that? I have a 84 gls and didnt know about it. Any details would be great
Old 03-10-16, 01:42 PM
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There is a relay under the driver's side dash near the steering column. There is a graphic/schematic somewhere on the forum you can search for that shows basically where this relay is and which wires in the 6-pin connector to jumper. This will allow the fuel pump to run whenever the key is ON.

I don't remember what the graphic is called or what to search for specifically. But it should be pretty easy to find.
Old 03-10-16, 02:51 PM
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Originally Posted by Jeff20B
There is a relay under the driver's side dash near the steering column. There is a graphic/schematic somewhere on the forum you can search for that shows basically where this relay is and which wires in the 6-pin connector to jumper. This will allow the fuel pump to run whenever the key is ON.

I don't remember what the graphic is called or what to search for specifically. But it should be pretty easy to find.

Thanks a lot Jeff
Old 03-11-16, 05:16 PM
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jeff is the man
Old 03-13-16, 11:23 AM
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my fuel safety relay wass messed up had to bypass it. know my pump starts when i turn the key
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