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2
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1answer
93 views

2001 Mercury Sable — Rough Idle/High RPM and Transmission Leaks

I have a 2001 Mercury Sable (24V DOHC V6) that has been having problems with its vacuum system. I live in Florida where the average temperature lately has been in the 80s. For roughly a month now, ...
8
votes
2answers
3k views

Oil in air intake: is this a faulty breather valve or by design?

I noticed the other day that a component (breather valve) was not fitted properly (the clip that held the valve cover breather in place was sitting between the O-ring and the lip, instead of fastening ...
4
votes
1answer
215 views

How to diagnose a vacuum hose leak or pcv pump problem

I have a old 1993 Mitsubishi Triton MJ which is having a bit of an issue at the moment with acceleration. With the initial acceleration such as moving away from traffic lights the engine will often ...
1
vote
1answer
61 views

Follow Maintenance Manual or Service technician recommendations?

We have a 2006 Highlander. Whenever we take it for regular servicing, the service technician recommends some items not specified in the maintenance manual. We told him that and he said it is common ...
0
votes
1answer
51 views

Is there such a thing as a throttling valve that can operate with oil as the working fluid?

I'm searching for a throttling valve that uses oil in order to convert pressure into thermal energy that can then be extracted via a cooler. Is there such a thing as a oil throttling valve? It would ...
2
votes
1answer
71 views

No check valve on valve cover

On a 2004 Neon RT 2.0 SOHC we had an issue with one of the rockers. When we took the valve cover off to replace the rocker, we noticed that there was no baffle in the valve cover. There were large ...
3
votes
2answers
2k views

Is the vent from the pcv valve back into the air intake really needed?

After working on my car, I didn't bother to reattached the line from the pcv valve into the air intake before testing the motor. It ran normally. This made me question whether I need to even return it ...