Author Topic: Iím Lost!  (Read 407 times)

Offline 78Hawk

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Iím Lost!
« on: February 12, 2018, 09:09:13 PM »
Hello All,

I have a 78 C10 longbed with a 454, edlebrock intake, Holley 4 barrel, MSD ignition kit and she wonít run.  Iíve changed both tanks, fuel sending units, fuel pump, alternator, coil, ignition switch, battery, battery cables, oil, transmission fluid, had the carb rebuilt and changed breaks and break lines just because. When I put the new fuel pump on it started right up and idled well for about two weeks.  I put it in drive or give it gas and it died. Now it wonít start at all WTH? I did notice that when it was running it was making a high pitched sqeeking noise but if I remove the negative battery cable the whole itís running the noise stopped. I donít know if one has anything to do with the other but...

Offline Rapid Roy

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Re: Iím Lost!
« Reply #1 on: February 12, 2018, 10:00:31 PM »
Welcome to the site.
1974 Cheyenne 10 LWB 350/TH350/With AC

Offline 78Hawk

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Re: Iím Lost!
« Reply #2 on: February 13, 2018, 10:45:11 AM »
Thank you

Offline bd

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Re: Iím Lost!
« Reply #3 on: February 13, 2018, 12:51:14 PM »
Regarding the squeal, check the alternator belt adjustment.  With the engine off, grab the alternator fan directly behind the alternator pulley and try with all your hand strength to spin the pulley.  If the pulley rotates the belt is too loose and needs to be tightened.

Will the engine crank?  Make sure the positive battery cable isn't rubbed through by the frame or melted against the exhaust manifold.  Give the three fusible links a moderate tug to see if any stretch or separate.  Pull a wire off of an easily accessible spark plug and check for spark while an assistant cranks the engine.  Read through Fuel Pump? Truck died... Can't diagnose if you need details on how to go about this.  If you see a consistent blue spark, check for fuel delivery to the carburetor.
Rich
It's difficult to know just how much you don't know, until you know it....
In other words... if people learn by making mistakes, by now I should know just about everything!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline Irish_Alley

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Re: Iím Lost!
« Reply #4 on: February 13, 2018, 03:19:22 PM »
to add about the squeak, the reason it would stop when you removed the battery cable is because the alternator would stop putting a heavy load on the belt and it wouldnt slip
If you canít tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline 78Hawk

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Re: Iím Lost!
« Reply #5 on: February 19, 2018, 10:09:26 PM »
Thank you for the great advice! I will try the suggestions and let you know the results.