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Author Topic: vacuum leak  (Read 5540 times)
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sainthaloblue
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« on: January 21, 2012, 04:48:56 PM »

Hello everybody! i have a vacuum leak on my 79 beta 2.0 engine I just bought the car and have vacuum leaks and vacuum lines that go nowere just pluged off does anybody have a vacuum or emission diagram?
« Last Edit: January 21, 2012, 04:50:33 PM by sainthaloblue » Logged
MattNoVAT
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« Reply #1 on: January 21, 2012, 05:11:01 PM »

Can you take a picture of the pipes that go nowhere?

It will help identify and likely speed up the process of determining where the pipe should go.
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1

Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Horsepower is how fast you hit the wall and torque is how far you send the wall across the field once youve hit it.
rossocorsa
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« Reply #2 on: January 21, 2012, 10:37:31 PM »




I can e mail you the original pictures if you find these too small North American models are very complicated and I'm afraid i know next to nothing about them
« Last Edit: January 21, 2012, 10:39:37 PM by rossocorsa » Logged
sainthaloblue
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« Reply #3 on: January 22, 2012, 04:27:12 PM »

Can you take a picture of the pipes that go nowhere?

It will help identify and likely speed up the process of determining where the pipe should go.

I am out of town but will take a picture and post it as soon as i can
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sainthaloblue
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« Reply #4 on: January 22, 2012, 04:30:17 PM »




I can e mail you the original pictures if you find these too small North American models are very complicated and I'm afraid i know next to nothing about them

Thank You for the pics and im sure u know alot more than seeing as this is my first Beta and carbureted engine! and I would appreciate it if u would email me the pics my email is sainthaloblue@yahoo.com
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sainthaloblue
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« Reply #5 on: February 05, 2012, 05:37:14 PM »

Can you take a picture of the pipes that go nowhere?

It will help identify and likely speed up the process of determining where the pipe should go.

Here are dome pics I kno they aren't that good but i hope it help.

 


* oie_593534Bb1KTDCG.jpg (359 KB, 746x496 - viewed 1136 times.)

* oie_592132XK9FRToi(1).jpg (249.09 KB, 698x464 - viewed 515 times.)
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MattNoVAT
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« Reply #6 on: February 05, 2012, 06:00:51 PM »

The pipe in the top picture that is marked "Vacuum line" this is blanked off on my normally aspirated 2.0 with a  34 DATR.  On my car there is a very small brass T section that comes off the inlet manifold.  

Re: The top picture... Is your brake servo connected??


In the lower picture the larger bore connection with no pipe on it I think should be the crank breather and that used to have a pipe running up to the underside of the stock air filter housing.
« Last Edit: February 05, 2012, 06:19:49 PM by MattNoVAT » Logged

1981 2000 Coupe S2/FL
1976 1600 Coupe S1

Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Horsepower is how fast you hit the wall and torque is how far you send the wall across the field once youve hit it.
HFStuart
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« Reply #7 on: February 05, 2012, 07:50:38 PM »

Matt,

I think the pipe in the top picture that he says has pressure could well be the crank breather hose. Unless you got had a really good look in you might well think that comes from the inlet.

Stuart
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MattNoVAT
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« Reply #8 on: February 05, 2012, 08:45:05 PM »

It does look like the crank breather just by the shape of the pipe and the marks from the hose clip, it looks like its the right routing to fit onto the underside of the air filter housing.

The pipe-less connections are throwing me a bit.

We'll get there slowly but surely :~)
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1

Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Horsepower is how fast you hit the wall and torque is how far you send the wall across the field once youve hit it.
HFStuart
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« Reply #9 on: February 05, 2012, 10:05:28 PM »


The pipe-less connections are throwing me a bit.

We'll get there slowly but surely :~)

Looking at where the photo is taken from (past the dizzy) it's not the fuel pump is it?
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cheeky monkey
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« Reply #10 on: February 06, 2012, 03:36:34 AM »

it does look like the fuel pump
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Graham

1979 beta coupe 1300
MattNoVAT
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« Reply #11 on: February 06, 2012, 08:47:23 AM »

So the question is: has the mechanical fuel pump been replaced with an electric pump?
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1981 2000 Coupe S2/FL
1976 1600 Coupe S1

Understeer is when you hit the wall with the front of the car. Oversteer is when you hit the wall with the back of the car. Horsepower is how fast you hit the wall and torque is how far you send the wall across the field once youve hit it.
Thotos
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Theo Kyriacou


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« Reply #12 on: February 06, 2012, 11:45:54 AM »

Has the car been converted from automatic to manual at some point? The automatic cars have a vacuum valve controlling the idling speed and it could be that some of these lines were not connected when the car was converted?

Top picture, both pipes should connect to the air filter. The bigger pipe is the crankcase breather  and the second pipe is the EGR (exhaust gas recirculation) valve pipe (I think  Undecided ) Has your car been fitted with a K&N (or similar) air filter? A lot of people don't know what to do with these pipes once they change the standard air filter.

The two unconnected pipes on the manifold are meant to connect to water pipes for manifold heating? This is the case with automatic cars but might not be for manuals.
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Theo Kyriacou
Thotos
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Theo Kyriacou


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« Reply #13 on: February 06, 2012, 11:49:41 AM »


 and the second pipe is the EGR (exhaust gas recirculation) valve pipe (I think  Undecided )


On second (and more careful) look, no it isn't! The EGR pipe is shown above it and seems connected (to the carburettor end at least). The small unconnected pipe is just a vacuum pipe which would connect to the idling adjustment valve for an automatic car.
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Theo Kyriacou
sainthaloblue
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« Reply #14 on: February 18, 2012, 05:30:16 PM »

So the question is: has the mechanical fuel pump been replaced with an electric pump?

Yes it has a electrical fuel pump I was told by the previous owner. so these cars originally came with mechanical fuel pumps?
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sainthaloblue
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« Reply #15 on: February 18, 2012, 05:33:34 PM »


 and the second pipe is the EGR (exhaust gas recirculation) valve pipe (I think  Undecided )


On second (and more careful) look, no it isn't! The EGR pipe is shown above it and seems connected (to the carburettor end at least). The small unconnected pipe is just a vacuum pipe which would connect to the idling adjustment valve for an automatic car.

I dont think think this car was a auto I believe its always been a manual. and the fuel filter has been replaced it has a 34datr its weird because its a auto choke but it also has a manual choke on it.
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HFStuart
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« Reply #16 on: February 18, 2012, 05:36:57 PM »

As standard it would have had a mechanical pump just under the inlet manifold.

It's possible that you might have a DATR with a manual choke conversion fitted. There were kits to do this or it could have been done with parts from a DMTR.
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rossocorsa
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« Reply #17 on: February 18, 2012, 06:35:23 PM »

So the question is: has the mechanical fuel pump been replaced with an electric pump?

Yes it has a electrical fuel pump I was told by the previous owner. so these cars originally came with mechanical fuel pumps?

maybe maybe not North American spec differed almost every year so from this side of the water it's really difficult to know
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