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1997 mazda mpv 3.0 L V6 oil leaks behind passenger side valve cover

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Is that a question? sounds like you need to replace a gasket or two

Posted on May 10, 2017


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The PCV is a valve and a hose, that sucks engine ring bypass gasses and reburns them. if it plugs up the engine leaks oil.

if the hose cracks it sucks air and the AFR goes lean and bucks.


only on engines (unstated) that use a MAF sensor.

engine that use a MAP sensor ,race too fast with full power and no jerk with air leaks.

next time post engine type. as we can not guess this.

the list.....

2.0 L FS-DE I4 (99-02)

2.3 L L3-VE I4 (02-05)

2.5 L GY-DE V6 (99-01)

2.5 L AJ V6 (99-02)

3.0 L AJ V6 (02-06)

2.0 L RF MZR common rail turbodiesel


if unsure, (why fix any engine,if unsure>)but in the USA

the hood EPA sticker states this clearly.

no engine , no country, no joy,

Jul 18, 2014 | 2000 Mazda MPV

1 Answer

Oil leak at the rear of the valve cover on the right side does not appear to be the valve cover gasket. another issue is the check engine light and the code is 743 and the o/d off light is blinking.

This isn't a solution, but I have a similar oil leak. I can see clearly with the help of a telescopic mirror that the leak is emanating from the port where the PCV valve hose goes into the cylinder head.

Oct 20, 2010 | 1998 Mazda MPV

1 Answer

What is the cylinder order and out of 6 what numbers are at front and what are at back? It's a 2003 Mazda MPV 3.0L

3.0 V6

1-4-2-5-3-6The front bank is 6-5-4 from drivers side to passenger. The back bank is 3-2-1.

Oct 07, 2010 | 2003 Mazda MPV

1 Answer

I'm looking for the firing order on a 2001 Mazda mpv. Everything on the internet doesn't match whats under the hood. HELP!!

Some one has probably changed the engine if everything on the net does not match. What is the engine designation that is on the valve cover so we can help you.

Usual Mazda firing order 1 3 4 2 (4 cyl most any make)

2.2L Same

2.6L Same

3.0L (V6) 1 2 3 4 5 6

Apr 02, 2010 | 2001 Mazda MPV

1 Answer

How to change dome light bulb passenger side on 1997 mpv

remove plastic cover with small screw driver then bulb

Mar 03, 2010 | 1997 Mazda MPV

3 Answers

Timing marks on 1993 mazda mpv

They are on the outside edge of each cylinder head.

Aug 19, 2009 | 1993 Mazda MPV

2 Answers

1997 Mazda MPV, 3-Ltr. V6, destroys Timing Belt

i need help install a timebelt in a mazda mpv? please help me out

Jul 14, 2009 | Mazda MPV Cars & Trucks

1 Answer

Wher is #4cylinder on a 2004 madza6 with a v6

your cylnders zig zag, so it wiould be like this.

1 3 5
2 4 6

this is from the passenger side to the drivers side.

Nov 20, 2008 | 2003 Mazda MPV

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