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Z31 300ZX(T) 1984-1989 Zs - Engine and Chassis Discussion


       
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Old Aug 12th, 2007, 05:32 PM   #1 (permalink)
Brother_Dave
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Getting Spark....but still no start

HI,
I'm having an issue with my '85 Nissan 300zx na 2+2. In a nut shell, it wont start. When I crank it, it tries and tries, but never acts like it's getting a spark. I've changed the distributor cap and the rotor and nothing happened. I've checked the plugs, and they're all gettin' a spark, but it doesn't seem to be lighting the fuel. Oh yeah, and when I crank it, I get a STRONG odor of gas.

Any suggestions??

Thanks in advance.

Dave
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Old Aug 12th, 2007, 10:46 PM   #2 (permalink)
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Fuel leak? Have you checked the fuel pressure regulator? Make sure the vacuum line isn't pulling gas through it. If it is the, fpr is broken. Could be causing a major flooding condition. Sounds silly, but also make sure the cams are lined up properly.
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Old Aug 13th, 2007, 10:16 AM   #3 (permalink)
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wow. I thought I had learned a little about this car. I don't know what/where the fuel regulator is, how to tell if the vaccum line has fuel, or how to make sure cams lined up.
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Old Aug 13th, 2007, 12:52 PM   #4 (permalink)
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As always, I am deeply impressed with the advice given in this forum. I checked my chilton book and found where the FPR is. Went out to the car and.....whataya know.....the wire going to it was all kinds of burnt and charred. I wiggled it and my car started(not right then. when I turned the key over) So just change out that wire right?

Still curious about the cams though.
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Old Aug 13th, 2007, 02:28 PM   #5 (permalink)
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Quote:
Originally Posted by Brother_Dave
So just change out that wire right?
Sounds like a plan.
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Old Aug 13th, 2007, 04:02 PM   #6 (permalink)
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Sometimes if the timing belt is loose the cams can jump a few degrees, leaving the valves open during the compression stroke, and leaving the cylinders with no compression. And the engine doesn't start.
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Old Aug 13th, 2007, 04:04 PM   #7 (permalink)
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Quote:
Originally Posted by Brother_Dave
As always, I am deeply impressed with the advice given in this forum. I checked my chilton book and found where the FPR is. Went out to the car and.....whataya know.....the wire going to it was all kinds of burnt and charred. I wiggled it and my car started(not right then. when I turned the key over) So just change out that wire right?

Still curious about the cams though.
Ah, must be the fuel temperature sensor. I didn't know it would keep the car from starting, though. Guess I was in the right place for the wrong reason.....
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Old Mar 15th, 2008, 10:56 PM   #8 (permalink)
300zx?
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Quote:
Originally Posted by Brother_Dave View Post
As always, I am deeply impressed with the advice given in this forum. I checked my chilton book and found where the FPR is. Went out to the car and.....whataya know.....the wire going to it was all kinds of burnt and charred. I wiggled it and my car started(not right then. when I turned the key over) So just change out that wire right?

Still curious about the cams though.

what is an FPR?
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Old Mar 16th, 2008, 07:35 AM   #9 (permalink)
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fuel pressure regulator
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