Found out why my car starts up at 4k
12-30-06, 07:35 PM
#3
That one connects to a pipe on the rats nest that leads to the top of the solenoid with a blue plug (second from the back), but it looks like your rats nest is gone, so just plug it. Anyway, a vacuum leak won't make the engine run at 4000 RPM, since it provides more air but not more fuel. Have you read my post in your "adjusting throttle linkage" post? Make sure your throttle cable is hooked up right and not holding the throttle open, and try to manualy push the throttle closed too and see if the RPMs drop.
Since the online FSM i down, I'll take a photo of the vacuum diagram in my Hayne's manual (Don't have a scanner <shruggs>), in case you need to track down any more vacuum lines.
Since the online FSM i down, I'll take a photo of the vacuum diagram in my Hayne's manual (Don't have a scanner <shruggs>), in case you need to track down any more vacuum lines.
12-30-06, 07:38 PM
#4
Originally Posted by DogBox
That one connects to a pipe on the rats nest that leads to the top of the solenoid with a blue plug (second from the back), but it looks like your rats nest is gone, so just plug it. Anyway, a vacuum leak won't make the engine run at 4000 RPM, since it provides more air but not more fuel. Have you read my post in your "adjusting throttle linkage" post? Make sure your throttle cable is hooked up right and not holding the throttle open, and try to manualy push the throttle closed too and see if the RPMs drop.
Since the online FSM i down, I'll take a photo of the vacuum diagram in my Hayne's manual (Don't have a scanner <shruggs>), in case you need to track down any more vacuum lines.
Since the online FSM i down, I'll take a photo of the vacuum diagram in my Hayne's manual (Don't have a scanner <shruggs>), in case you need to track down any more vacuum lines.
I still have my rats nest as well
i unscrewed the throttle cable from the metal holder on the carb, and it still starts up and runs its way to 4k
12-30-06, 07:46 PM
#6
Oops, just realised your car is a 79, so my advise about vacuum line is worthless. The throttle linkage still works the same though. Does your car still have a 79 engine? Is it a manual or automatic? I need to know so I can send you the right diagram.
Edit: never mind, you have the manual. It doesn't show where the hose goes? Either way, a vacuum leak won't do that.
Edit: never mind, you have the manual. It doesn't show where the hose goes? Either way, a vacuum leak won't do that.
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12-30-06, 07:52 PM
#9
OK. So you disconnect the throttle cable and it still idles high. Hmmm. Have you tried to manualy push the throttle closed? Your car does have a throttle opener so make sure that isn't holding it open. Check the dashpot too, if you have one. Obvious, but have you tried to just adjust the idle screw (not the mixture screw)?
12-30-06, 08:05 PM
#11
Originally Posted by DogBox
OK. So you disconnect the throttle cable and it still idles high. Hmmm. Have you tried to manualy push the throttle closed? Your car does have a throttle opener so make sure that isn't holding it open. Check the dashpot too, if you have one. Obvious, but have you tried to just adjust the idle screw (not the mixture screw)?
12-30-06, 08:15 PM
#13
here is a pic down the carb, secondaries side. have to get new batteries for the camera. it looks like the secondaries are slightly open, but I am assuming that they are sopposted to be that way, for (cant think of proper termonology) suction effect?
Take a look at the gaskets on this carburetor! all hanging off to the sides.
word of advice, NEVER USE EBAY'S KEYSTER CARBURETOR REBUILD KITS
Take a look at the gaskets on this carburetor! all hanging off to the sides.
word of advice, NEVER USE EBAY'S KEYSTER CARBURETOR REBUILD KITS
12-30-06, 08:18 PM
#14
Hmmm. The secondaries should be fully closed at idle. They will be a little tilted but they will touch the edge of the bore all the way around. Can't tell much from the picture I'm afraid.
12-30-06, 08:20 PM
#15
Originally Posted by DogBox
Hmmm. The secondaries should be fully closed at idle. They will be a little tilted but they will touch the edge of the bore all the way around. Can't tell much from the picture I'm afraid.
12-30-06, 08:52 PM
#17
Good pictures but you just can't see much above with a camera I suppose. For the engine to run as fast as it is, either the primaries or the secondaries must be slightly open, and I've gone through eveything I can think of that could do that. If you haven't already, read my post in "Adjusting throttle linkage" and take a good look at those return springs I mentioned becuase they can do strange things, and try the idle speed screw. It should be on the right side of the carb in the middle on your car and the idle mixture screw should be right below it. See if the idle speed screw can get the idle down to a normal speed.
12-30-06, 08:57 PM
#18
Originally Posted by DogBox
Good pictures but you just can't see much above with a camera I suppose. For the engine to run as fast as it is, either the primaries or the secondaries must be slightly open, and I've gone through eveything I can think of that could do that. If you haven't already, read my post in "Adjusting throttle linkage" and take a good look at those return springs I mentioned becuase they can do strange things, and try the idle speed screw. It should be on the right side of the carb in the middle on your car and the idle mixture screw should be right below it. See if the idle speed screw can get the idle down to a normal speed.
12-30-06, 11:22 PM
#21
i got the car to idle at 2200rpm now, but i would never drive it. it looks like my crappy gaskets are leaking a tiny tiny bit of gas out the sides. not taking the chance of having a hot engine getting dripped on by gasoline..
12-30-06, 11:34 PM
#22
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if you need a rebuild kit for the carb go for the smp/hygrade{pn#1556} one its of fairly high quality and comes with pretty much everything but the floats
12-31-06, 12:42 AM
#23
Originally Posted by kapn krunch
if you need a rebuild kit for the carb go for the smp/hygrade{pn#1556} one its of fairly high quality and comes with pretty much everything but the floats
no offence but I reeeeeeeeeally dont want to rebuild this carb again :p
I am getting a new side draft and manifold soon anyways
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