20r weber help
#1
Registered User
Thread Starter
20r weber help
Just bought a 79 4x4 and the motor runs but seems to idle high and not smooth.
Will also backfire some.
From what I know, the motor is a reman 20r with a weber 32/36 and crane electronic ignition.
I believe that I have correctly plugged all the vacuum lines and that has seemed to help tremendously.
The truck also does not have a muffler and is running a header to a glasspack.
I'm suspecting there is another leak somewhere.
Any other things that I should be looking for?
Here's a pic of the engine bay, I'll post some more detailed pics when I get then today or tomorrow.
Will also backfire some.
From what I know, the motor is a reman 20r with a weber 32/36 and crane electronic ignition.
I believe that I have correctly plugged all the vacuum lines and that has seemed to help tremendously.
The truck also does not have a muffler and is running a header to a glasspack.
I'm suspecting there is another leak somewhere.
Any other things that I should be looking for?
Here's a pic of the engine bay, I'll post some more detailed pics when I get then today or tomorrow.
#2
Registered User
iTrader: (1)
get a bottle of carb cleaner and spray it around the base of the carb where the adapter is, alors where the intake manifold meets the head, if the idle drops or stumbles you have a vacuum leak there and may be the cause of your problems, also if you have the two piece redline adapter for the carb they are known to cause vacuum issues. Keep us updated!
#3
Registered User
Thread Starter
get a bottle of carb cleaner and spray it around the base of the carb where the adapter is, alors where the intake manifold meets the head, if the idle drops or stumbles you have a vacuum leak there and may be the cause of your problems, also if you have the two piece redline adapter for the carb they are known to cause vacuum issues. Keep us updated!
#4
Registered User
Thread Starter
My distributor vacuum advance only has one vacuum hose. Most pictures I notice two.
Also facing the engine bay from the front, something looks to be missing directly opposite of the distributor. Looking at diagrams, I'm not sure exactly what this is, in the desmog tutorial, I notice that this was not removed.
In the picture below, it is directly to the left of the 20r sticker, kind of shiny looking.
Also facing the engine bay from the front, something looks to be missing directly opposite of the distributor. Looking at diagrams, I'm not sure exactly what this is, in the desmog tutorial, I notice that this was not removed.
In the picture below, it is directly to the left of the 20r sticker, kind of shiny looking.
#6
Registered User
Thread Starter
Thanks that helps a lot on the fuel pump. Makes sense now.
I also believe that I need a fuel pressure regulator to make the weber run properly. Would that be correct?
Only 1 vacuum port, I'll dive in with more pictures as soon as this weather lets up. Hopefully tomorrow evening.
I also believe that I need a fuel pressure regulator to make the weber run properly. Would that be correct?
Only 1 vacuum port, I'll dive in with more pictures as soon as this weather lets up. Hopefully tomorrow evening.
#7
Registered User
iTrader: (1)
That's what I heard too, I don't have first hand experience on weber carbs yet, so I can't tell you precisely where to adjust. This is what I am buying: http://www.summitracing.com/int/part...-804/overview/
and gauge: http://www.summitracing.com/int/part...0001/overview/
With clear detailed pictures some people here might point you to some things wrong.
and gauge: http://www.summitracing.com/int/part...0001/overview/
With clear detailed pictures some people here might point you to some things wrong.
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