Ford V10 questions

[dlanier]

I am hoping someone here can help me with questions about my 2004 Jayco Motorhome with the typical Ford V10 engine. I'm new here so I hope I am posting this question in the right place. Here is the situation. I recently discovered a broken vacuum hose on my engine. Looks like a squirrel had chewed thru the hose and it is idling very badly. When I pulled the engine cover off in the cab I was able to locate where the hose had been completely chewed thru and air was being sucked into the system. The strangest part of this story is that I CANNOT locate the other end of the hose and where it is connected to. I have used a flashlight and even my borescope camera and still cannot locate the other end of the connection. As you know there is very little room to do anything to these engines. Anyway, the connection I have found is located in the intake portion of the engine. This is at the rear of the intake on the passenger side of the vehicle. I have googled and researched but to no avail. Any help in locating the missing connection would be appreciated. Seems to me there should be an obvious loose hose somewhere but I cannot find it.

[twinboat]

On mine, the rubber hose went to a plastic line that heads to the right front and thru the firewall to the heater control.

[SafariBen]

If that's the case, then the symptom will be the heat will be stuck on defrost, you won't get heat out of the lower vents.

[Cajun 143]

Have you tried cutting out the chewed portion and reconnecting?

[dlanier]

Originally Posted by Cajun 143

Have you tried cutting out the chewed portion and reconnecting?

That is the problem. I have put a new hose on the manifold side, but CANNOT locate where to connect it on the other end.

[twinboat]

Vacuum hose routing should be downloadable.

[Randalpho]

Vacuum hose routing may be on your emission label. Look for the label on your air cleaner housing.

[xrcris]

Are you talking about the vacuum hose that runs the AC panel? If so, from up by the passenger side firewall, the vacuum goes to the accumulator which is buried under the AC and heater core before going through the firewall in the passenger footwell.

[TeJay]

dlanier,

The vacuum is created by the engine. The vacuum is used throughout the engine to open and close heat doors, turn on and off switches and many, many other items. As long as you find a vacuum hose with vacuum connected to your chewed hose when it is needed it will work as it did before it was chewed. Yes you need a vacuum connection that is working when you need it to work for the chewed hose.

[dlanier]

Ok I have a couple more questions. Since I can’t find the other end of the connection should I cap the chewed hose or tee it into an existing hose? Also the other end of the connection is obviously open. Just go ahead and ignore that end and see what happens? Thanks for your response.

[givemeaboost]

If the end that you can't see is still hooked up just cut the chewed spot out and replace with a new piece of hose with an inline splicer. It should be really simple.



Ken..............

[SergioP]

We need a picture of the hose. It has to connect to another hose or valve cover.

[dlanier]

See the attached photos. One shows the chewed end to the left of the red lines. The next one shows where I attached the new line (green tape added to identify.)_ The other one shows the location as seen from inside the cab. The new hose can barely be seen with the tape on it located above the green plastic cap. I cannot figure out where the other end of the hose should be attached. Hope this helps.

[SergioP]

I think that hose does a U turn up to the back of the hood over to the brake booster. Follow the hose from the brake booster over the top of the air intake hose and I bet it’s chewed off somewhere there passed that before it turns down towards the intake nipple.