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Hi, I have a hj running a 350 chev, the last couple of times i've taken it out for a run i was driving around just crusing only giving it a stick about 3 or 4 times. After about 20-25 mins it starts to lose power, it feels like its starving for fuel, I do have a clear fuel filter and as soon as this happens i get out to look at it, and it is full, and the holley fuel pump(mechanical) which i purchaced brand new has only been in the car for approx 150 k's but is about 4 yrs old as the motor had only been rebuilt just recently and the car was sitting for a while.(dropped the piston) the dizzy are points so i dont think its electrical, and also tried 3 different coils (1 brand new),ive checked all vacuum lines and seems to be fine. i took it to a garage to ask a bloke, he listened and he said it sounds like its not firing on 2 cylinders, but i have just had my car tuned by a well known local dyno guy just a week before. So any advice from anyone to do anything to get my ride going right again would be greatly appreciated
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Hi MadHJ,
A feeling of running lean to me could be a few things:
(1) - motor has been rebuilt ? How many kms has it done since ? Its a new donk now so dont hammer it !
(2) - did you get the heads converted to LPG ie hardened seats, new guides and val
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Did you rebuild the carb when you rebuilt the motor? The bowl may be full of gunk or the float sticking. |
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Hi guys thanks for your replies
(1) motor has done about 100kms, but when you have a motor with a steel crank, 6" rods, 040 thou forgies, double hump fuelies, solid lifters and cam with about 400 ponies ready to let loose, sometimes you just cant help it
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With the solid lifters, I would be double checking the valve clearances. If they are a bit tight, as everyhting heats up, you may be holding the valves open and loosing power that way.
The other alternative may be overheating the fuel. A carb shie |
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Hi, just an update on whats goin on, This morning i spoke to a mechanic i know and he agrees with "jabba" and could be the fuel getting to hot and therfore wont ignite. I thought to myself how could that be, why just happen all of a sudden. so went in the
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