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Experiencing a stalling problem with one of the L78 4spd cars. Seems to be fuel related from where I sit. Car stalls when you brake for a stop, but starts right again up when you hit the key. Runs fine down the road but feels a little funy when you hit the brakes. I checked the front bowl float level and appeared to be ok. Didn't check rear yet. Any comments...
wilma
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
#2
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Power brakes? Leaning out fuel when brakes applied? Richer fuel mix or higher idle speed?
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20 foot 75 hp good time at the lake |
#3
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Don't overlook a loose wire or ground shorting out when you apply the brakes.
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"I never think of the future. It comes soon enough." - Albert Einstein |
#4
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Maybe a internal vacumn leak in the power brake booster that only shows up when you apply the brakes. I would try taking off the vacumn hose to the booster and capping it. Then drive the car and see if it still does it when you apply the brakes. Just remember that your brakes aren't going to work very good.
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#5
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Maybe float level....
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Don't mess with old farts - age and treachery will always overcome youth and skill! Bullshit and brilliance only come with age and experience. |
#6
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Sounds like a float. Sometimes the brass floats will give it up.
Jim
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1970 LS-6 Chevelle Going fast on Goodyear Polyglas. 12.21 @ 115.32 PSMCDR 2009 12.24 @ 114.30 PSMCDR 2010 |
#7
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"but feels a little funy when you hit the brakes. "
That's another good clue it's vacuum related. That's my vote. You could also "T" in a vacuum gauge to manifold vacuum and watch it when someone steps on the brake pedal. Or you could just step on the brake with it sitting still, idling, and see if the engine slows down and gets rough. Verne |
#8
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Tried disconnecting the vacuum line and it made no difference. Richened the mixture a little and raised the idle to about 900-1000rpm and that seemed to help a little. Checked timing and it seems ok. Noticed a leaky valve cover in the process so now I have something else to do. Never a dull moment...
wilma ![]()
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
#9
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Maybe as simple as a tank of bad fuel. Try some fresh good gas. Earl
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#10
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I think the fuel is ok, but..????? Reduced float levels in both bowls..still stalls on forward stop..but if you go fast in reverse and hit the brakes it doesn't do it...so it definately has an issue...well back to the shop.
wilma ![]()
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
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