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#1
12-29-2012, 03:08 PM
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Frustrated. Any ideas?
More problems. 535 IA II WP HP Heads. We got the engine rebuilt and in the car. It cranked but would not run. Get a nice vroom and it cuts off. Adjusted the timing but still wouldn't run.Thought it may be the carb,A 1050 I rebuilt. Changed to a 1250 rebuilt by a reputable local company,no difference. Checked compression on all cylinders,they were good. Traced all the wiring down didn't find anything. Put an HEI in it and bypassed the electronics, no change. Cam was degreed. It doesn't backfire or anything. It sounds like it's going to run but it loses rpm and shuts down. Any ideas?
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#2
12-29-2012, 03:18 PM
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Fuel pressure, volume? Sounds like it cuts off when bowls run dry. Did you check the pump, pick up and lines?
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#3
12-29-2012, 03:22 PM
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Also check the wiring to see if you are getting consistent voltage to the ignition.
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#4
12-29-2012, 03:25 PM
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After engine shuts off is there fuel in the carb? As its dying if you pump the throttle does anything happen?
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#5
12-29-2012, 03:31 PM
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sounds like dizzy is 180 out. how about that?
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#6
12-29-2012, 03:47 PM
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Sounds like you are losing power when you let off of the key in the start position. Possibly a bad coil ?
__________________
You know it's going to be a good day when you wake up breathing! |
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#7
12-29-2012, 04:01 PM
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Quote:
__________________
3500lb 10.5" tire. 5.34@134.4 with a poor 60' |
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#8
12-29-2012, 04:06 PM
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vacuum leak.
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#9
12-29-2012, 04:15 PM
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Good fuel pressure, doesn't run long enough for the bowls to run dry. I tried another coil but nothing changed. then tried bypassing the coil and other electronics with the HEI(powered from battery),no key it's a frame car but still should have constant power the way we did the HEI. If we pump the carb it will run a little longer,but still dies. It would backfire if 180 out wouldn't it? It sounds good for the short time it runs.
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#10
12-29-2012, 04:19 PM
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does it sound retarded ?
sound advanced? old fuel? water in fuel? HYD lifters needing pumped? |
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#11
12-29-2012, 04:26 PM
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I feel retarded with all the trouble I've had with this engine. Fuel system cleaned,new fuel,solid lifters. Hard to tell but maybe retarded.
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#12
12-29-2012, 04:38 PM
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Has it ran long enough to set timing?
Advance the distributor a couple degrees and see what it does. What's the valves lashed at? Possibly too tight? When it starts, try running it at a fast idle or more? Gasoline I take it? Probably something small, really. 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#13
12-29-2012, 04:52 PM
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Gasoline. Hasn't run long enough to set timing,but we did the usual TDC number one then move in small increments till it cranks. I think the lash was .024
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#14
12-29-2012, 05:58 PM
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Check your voltage on your battery low voltage will not give enough spark to your ignition or msd. Sometimes bad cells on battery and not enough voltage to run your ignition on your msd box
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#15
12-29-2012, 06:30 PM
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Sorry I forgot. We did that too, and got a new battery.
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#16
12-29-2012, 06:38 PM
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Sure it's not 180 out?
__________________
65 Lemans Street Car - 521, T400, 3.70 9". 10.13 @ 135. 3770 lbs. Drag Week ‘14, ‘15, ‘17 63 Lemans Race Car- 8.81 @ 151, 5.60 @ 123(SOLD) 67 Bonneville ragtop 74 Firebird - 455, e heads, TK0600 in process |
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#17
12-29-2012, 06:44 PM
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Quote:
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#18
12-29-2012, 06:45 PM
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At this point I'm not 100 percent sure of anything, but won't it pop and backfire if it's 180 out?
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#19
12-29-2012, 07:52 PM
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BEFORE you second- guess the cam timing chain installation,
set the card idle screw to a high idle. THEN TRY a 2-person effort to keep it running with pedal effort, and even starting fluid shots, and quick dizzy twist to attain "running". Basically anything it takes to achieve warm-up, with constant monitoring of OIL PRESSURE, and thermal gauge(s). Guessing: rehone or more causing rings to need re-seated? |
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#20
12-29-2012, 08:09 PM
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Quote:
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