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Seldom Seen Member
Join Date: Jan 2003
Location: California
Posts: 3,584
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Quiz for master mechanics
I replaced the points on my '73 911 yesterday. After replacing the rotor and the cap, I attempted to start the motor. As soon as I started cranking I heard an awful racket from the motor. It sounded like someone violently shaking a steel bucket of parts. I stopped cranking, scratched my head and tried to figure out how such a noise could be created merely by changing the points.
I read Wayne's project book and the Haynes manual but could not figure out what I had done wrong. I then inspected the motor and soon realized what the problem was. Anybody want to take a guess? |
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Registered
Join Date: Mar 1999
Location: Cornwall-on-Hudson, New York, USA
Posts: 4,499
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You put the cap on 180 degrees out of phase, if that's even possible?
Stephan
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Stephan Wilkinson '83 911SC Gold-Plated Porsche '04 replacement Boxster |
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Seldom Seen Member
Join Date: Jan 2003
Location: California
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No, that wasn't it. I thought about that but assumed that reversing the cap would mean that the car would not run but that it would not cause any noise.
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Why do things that happen to white trash always happen to me? Got nachos? |
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Did you remove the distributor to install the new points? If so, you may have put it back in 'off' one tooth on the drive gear ... it would start, but run like a bucking bronco on a couple of cylinders!
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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Seldom Seen Member
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Warren:
I did not remove the distributor. Try again.
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Why do things that happen to white trash always happen to me? Got nachos? |
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Author of "101 Projects"
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I would guess that you placed the plug wires in a counter-clockwise orientation, like on the 911SC, when it should be clockwise for your car. This is a very common error, and one that I have made once or twice myself...
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Seldom Seen Member
Join Date: Jan 2003
Location: California
Posts: 3,584
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You guys are thinking too hard. Think more along the lines of bonehead.
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Why do things that happen to white trash always happen to me? Got nachos? |
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Registered
Join Date: Jul 2003
Location: New Zealand
Posts: 37
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Were you turning the motor over using the nut on the fan to find TDC, and left the socket or spanner on the nut when you started the car?
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Stu W. 76 911 turbo. 79 911 SC. |
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You forgot to push the rotor all the way on the shaft and it few off and was being beaten around inside the Cap?
BTW, I forgot to put the rotor back on once. Counldn't figure out why it wouldn't start! What an idiot
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"I understand that you want to drive fast, it's just that I want to go faster!" Move ova please ![]() Chad aka "Chili" 1974 Base coupe in Carrera outfit. No A/C, no Sun Roof, no power windows. Fast and light, just the way I like it. (Sad to say, it's sold. But at least it remains with us on this board.) My car http://www.pelicanparts.com/gallery/CHILI 1969 RSR Project. Heavy on the word PROJECT! No pictures yet. Keeps breaking lenses of cameras. |
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Seldom Seen Member
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Way to go Stu. You sound like a man that feels my pain.
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Why do things that happen to white trash always happen to me? Got nachos? |
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Author of "101 Projects"
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Left your screwdriver leaning against the blades of the fan? Forgot to tighten the points plate? Dropped something into the area where the fan meets the pulley?
All big bonehead things there... -Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Author of "101 Projects"
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A very dangerous situation!
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Seldom Seen Member
Join Date: Jan 2003
Location: California
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Stu got it. I left a 1/2 inch drive ratchet on the fan bolt. Its a wonder I can make it through a day . . .
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Why do things that happen to white trash always happen to me? Got nachos? |
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Registered
Join Date: Jul 2003
Location: New Zealand
Posts: 37
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Woohoo!
Winning the quiz for 'silly mistake of the day' I have not done that one, but nearly have several times. Hope no damage was done.
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Stu W. 76 911 turbo. 79 911 SC. |
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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,803
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While working on the motor, I saw a plastic cap for a paint spray can or carb cleaner laying in there. That would have been nice in the fan. A thorough once over at the finish of each job needs to be routine. I haven't left too many tools in the engine compartment over the years, but a few. About half of them I never saw again.
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Author of "101 Projects"
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The 356 has a huge rear engine shelf. I've opened up my engine compartment (in the past) to find tools that I had been missing for months!
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Banned
Join Date: Feb 2002
Posts: 6,930
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Dropped a wrench in the super charger?
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