Question about 1990 Ford F150

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Vacuum hose missing

1990 F150 4.9 - The PCV has two vacuum connections. One goes to the intake, anybody know where the other one goes? I can't seem to find a diagram that includes the PCV connections.

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Your PCV valve has two port's, it also should have came with a plug ( Plastic ) That you break off of the PCV and plug the small one.Canada Emissions is the only one that uses both port's.

Posted on May 13, 2010

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Where is the pcv valve located on a chrysler 300


Here is the info you need. Notice the numbers in the image are the steps in which you should take 1st, 2nd, 3rd etc

24580049-jq13pypi3egybe0aho3o0ljx-4-2.gif
Disconnect the EGR tube, PCV, Purge and power brake booster vacuum hoses from the upper intake manifold
Re-Install is basically the same procedure just reversed.
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Hard to say without knowing exactly what vehicle we are talking about..but as a general rule your pcv valve normally has a 3/8 hose that attaches directly to your plenum or intake. It has to be an open vacuum port NOT a controlled vacuum port...if this doesn't help send me the vehicle type,year and engine size and I can pull up the vacuum diagram and send it to you.

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I need a vacuum line diagram fo a 1996 Chevy Lumina, 3.1. One line that is not connected to anything, is located at the top of the engine.


Sorry I don't have the diagram, but I do have a diagram of the engine and component locations. Your vacuum system is fairly simple. You have a MAP sensor attached to the air cleaner. I have pasted a picture below. It has one electrical connector and one vacuum hose that goes to the intake manifold or the throttle body.
Behind the right headlight is your evap canister. This will have a hose or line running to the fuel tank. Then it will have another hose going to the purge valve. The purge valve should be close by and it has a connector plus another hose that goes to the intake manifold.
Then you have the PCV hose that goes from the PCV valve in the valve cover to the air cleaner or intake manifold. I think yours just has a hose from the air cleaner and the rest is internal.
There is one more vacuum hose, and that is the bog one that goes from the intake manifold (or throttle body--looks to me like there are a couple of vacuum ports on the back side of the throttle body, and there may be a "T" on one of the hoses) to the brake booster. It this one was off, the engine would not run, as the vacuum draw is large. Please let me know if you cannot figure it out from these instructions and provide a picture, if you can.

MAP sensor:
jturcotte_653.jpg

purge valve:
jturcotte_654.jpg

jturcotte_2455.gif
jturcotte_2456.gif

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1 Answer

Where is the pcv on my 1993 eagle talon?


PCV LOCATED ON VALVE COVER.IT HAS VACUUM LINE OR 3/8 SIZE VACUUM HOSE CONNECTED TO IT PCV HOSE CONNECTS TO INTAKE MANIFOLD.WHICH IT RECEIVES VACUUM FROM.

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On the 2818 holley there is a calibrated elbow on drivers side of carb about centre of the main body.This connects to oil filler stand pipe in front of intake.Fresh air hose goes from air cleaner to back of block where road draft tube used to be before PCV came along.
The calibrated elbow serves as PCV metered orifice.Be sure flame arrester screen is inside of air cleaner on fresh air connection.

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mine is doing the same, it's your pcv receptor on the manifold. that hard plastic cover is actually part of the intake itself, if it "came off" it would cut your intake in half. that seem seals the two halfs together. you gotta pull the whole intake off and replace it... or jimmy rig it.

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