Topic: Over Revved
in Forum: C3 Engines
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Former Member
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Wayne, NJ - USA
Joined: 5/31/2002
Posts: 973
Vette(s): White 1975 L48 Stingray 129,000 Miles, daily driver.
My 75 has a little trouble waking up in the morning...and I really can't blame her. Once she's warmed up its ok, but until then all bets are off. I was paying so much attention when I started her today and gave it a lot of gas and immediatly let off when I realized I'd more than redlined her. Left her sit hood open for the rest of the day.....what's the chance I ruined something important?
Scot
Scot

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Former Member
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Wayne, NJ - USA
Joined: 5/31/2002
Posts: 973
Vette(s): White 1975 L48 Stingray 129,000 Miles, daily driver.
I'll check her out later on and post if she's idling rough or as normal...hope she's ok...I can't have more problems!
Scot

Scot
Former Member
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DOWNINGTOWN, PA - USA
Joined: 11/24/2001
Posts: 962
Vette(s): 1969 Monza Red Black Conv / Black Vinal hardtop
454/480 Tremec 5 Speed 308 Posi.Black Leather Interior, PS, PW, Air cond., tilt/tele,AM/FM Cass.-5 Pack CD, Hurst Shifter, side pipes
2004 Yellow convertible with black top and black interior
Scot,
This is what I would do.
Start it normally. Leave the choke on till the engine starts to warm up ( meaning you see the temp gauge start to move ) , then tap the gas petal and let off. The operative word there is tap ( not floor ). If the engine idols normally, run it up to about 2000 rpm. Again tap the gas ( not floor it ) up to maybe 3000 rpm and take your foot ( quickly ) off the petal. If it still idols and sounds ok, you are most likely allright. Of course if one of the mechanics ( like George ) tells you to do something else, do what he says. He actually gets paid to work on cars and therefore knows what he is talking about. ( well, that is supposed to be how it works ). Trust George he is ok.
This is what I would do.
Start it normally. Leave the choke on till the engine starts to warm up ( meaning you see the temp gauge start to move ) , then tap the gas petal and let off. The operative word there is tap ( not floor ). If the engine idols normally, run it up to about 2000 rpm. Again tap the gas ( not floor it ) up to maybe 3000 rpm and take your foot ( quickly ) off the petal. If it still idols and sounds ok, you are most likely allright. Of course if one of the mechanics ( like George ) tells you to do something else, do what he says. He actually gets paid to work on cars and therefore knows what he is talking about. ( well, that is supposed to be how it works ). Trust George he is ok.
I pretty much do what Glenns said myself. I really don't hit it until the temp is greater than 150. I just let it run idle for a while and tap it. Its a method that has worked pretty well for me so far, so I'll continue to do it even if it takes a little bit longer to get warm.
1977 Corvette EX-L48
383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's
(click to see a bigger version)
383 Stroker, Holley MPFI, MSD Ignition, BTO 700R4, VBP Street/Slalom, Hooker Sidepipes with JCL Spiral Baffles, Corbeau A4s w/ Shark Bar and Simpson 5-Points, 17" AR TTII's, Kumho MX's

(click to see a bigger version)
Former Member
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Wayne, NJ - USA
Joined: 5/31/2002
Posts: 973
Vette(s): White 1975 L48 Stingray 129,000 Miles, daily driver.
She's ok =) let her idle, sounded same as always and ran down the street like a champ. I dunno if she'll idle long enough to start up the way you were describing...seems to turn over and then falter fairly quickly when cold....is this a sign of a problem I'm too novice to recognize?
Scot
Scot
Scot,
Have you tried adjusting your automatic choke (assumeing you have one)? Our 79 was a hard starter and did not want to idle when cold. A simple choke adjustment cured the problem.
If you remove the air cleaner lid when the motor is cold and slowly depress and release your accelerator pedal, the choke butterfly in the carb (assumeing you have one of these also) should be fully closed. If not, back off the three screws that hold the black thermostat housing of the choke and slowly turn the housing to the left or right, whichever causes the butterfly to close completely. Re tighten the three screws, replace the air cleaner cover and turn the key to start. If this does not help, try checking your fuel filter to see if there is dirt or water present. If you have a vacuume guage, check your vacuume at the carb. You may also have a carb adjustment or timing out of whack. Good Luck!
Have you tried adjusting your automatic choke (assumeing you have one)? Our 79 was a hard starter and did not want to idle when cold. A simple choke adjustment cured the problem.
If you remove the air cleaner lid when the motor is cold and slowly depress and release your accelerator pedal, the choke butterfly in the carb (assumeing you have one of these also) should be fully closed. If not, back off the three screws that hold the black thermostat housing of the choke and slowly turn the housing to the left or right, whichever causes the butterfly to close completely. Re tighten the three screws, replace the air cleaner cover and turn the key to start. If this does not help, try checking your fuel filter to see if there is dirt or water present. If you have a vacuume guage, check your vacuume at the carb. You may also have a carb adjustment or timing out of whack. Good Luck!
Mike
Former Member
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Wayne, NJ - USA
Joined: 5/31/2002
Posts: 973
Vette(s): White 1975 L48 Stingray 129,000 Miles, daily driver.
Mike....woah dude....I know how to turn 'em on and drive 'em..learning the rest....do you have pictures of what you just described? I've heard of these things(and even know where my air filter is) but I'm a rookie! =) so send picts or really detailed descriptions to e-mail...thanx =) it seems to idle fine...just not for the first 30-60seconds.
Scot
Scot
Former Member
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DOWNINGTOWN, PA - USA
Joined: 11/24/2001
Posts: 962
Vette(s): 1969 Monza Red Black Conv / Black Vinal hardtop
454/480 Tremec 5 Speed 308 Posi.Black Leather Interior, PS, PW, Air cond., tilt/tele,AM/FM Cass.-5 Pack CD, Hurst Shifter, side pipes
2004 Yellow convertible with black top and black interior
Scot,
Mike's reply is VERY detailed and well described. I think if he sends you a pic or two you will be able to read the description and get the job done. Mike, have you thought of submitting that to the hints and tips section?
Mike's reply is VERY detailed and well described. I think if he sends you a pic or two you will be able to read the description and get the job done. Mike, have you thought of submitting that to the hints and tips section?
Former Member
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moro, IL - USA
Joined: 2/11/2002
Posts: 406
Vette(s): 1979 Black coupe. 11256 original, documented, miles on it when I bought it in April of 2000. It now has 13100 on it. Oyster interior, like new. Everything original, everything works, except the clock. Paint has a couple of minor flaws.
|QUOTE|Paragon75Ray said: Mike....woah dude....I know how to turn 'em on and drive 'em..learning the rest....do you have pictures of what you just described? I've heard of these things(and even know where my air filter is) but I'm a rookie! =) so send picts or really detailed descriptions to e-mail...thanx =) it seems to idle fine...just not for the first 30-60seconds.
Scot|/QUOTE|
Scot,
mike is right on with what he says. Being only 19 has put you in a group of people who have probably never had anything but Fuel injection. There is quite a difference. I bought my first car in 1959, it was a 57 Star Chief Pontiac, two Dr Hardtop. It ran pretty good for being a tank. Really it was a nice car. But I learned a lot about chokes, carbs, timing, dwell and a good portion of what is needed for these Sharks. Only 1 shark had F.I. The 82. I don't think the 68 had it. You could work on your own car then, It is a little different now. You need about $10,000 worth of tools to start, and then it gets more expensive.
|UPDATED|6/11/2002 11:12:38 PM|/UPDATED|
Scot|/QUOTE|
Scot,
mike is right on with what he says. Being only 19 has put you in a group of people who have probably never had anything but Fuel injection. There is quite a difference. I bought my first car in 1959, it was a 57 Star Chief Pontiac, two Dr Hardtop. It ran pretty good for being a tank. Really it was a nice car. But I learned a lot about chokes, carbs, timing, dwell and a good portion of what is needed for these Sharks. Only 1 shark had F.I. The 82. I don't think the 68 had it. You could work on your own car then, It is a little different now. You need about $10,000 worth of tools to start, and then it gets more expensive.

|UPDATED|6/11/2002 11:12:38 PM|/UPDATED|
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in Forum: C3 Engines
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