2002 Mazda 626 Knocking

REBEL5566

MEMBER
2002 MAZDA 626
6 CYL
2WD
AUTOMATIC
141,000 MILES

I have aknock in my engine that sounds similar to having a playing card in the spokes of your bicycle. The knock goes away once the engine gets up to speed. It does hesitate at lower speeds.

Monday, May 24th, 2010 AT 6:24 AM

7 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

So this is like a low engine speed tick?

Mark (mhpautos)

SPONSORED LINKS

Was this

answer

helpful?

Yes

Monday, May 24th, 2010 AT 6:38 AM

REBEL5566

MEMBER
4 POSTS

Yes when it is idleing.

Was this

answer

helpful?

Yes

Monday, May 24th, 2010 AT 7:50 AM

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there, have they valve clearance checked as one may have excessive clearance, caution must be taken if any adjustment is to be made as special tooling is required to replace adjustment shims, also check foe an exhaust leak around the manifold, start here.

Mark (mhpautos)

Was this

answer

helpful?

Yes

Monday, May 24th, 2010 AT 4:38 PM

REBEL5566

MEMBER
4 POSTS

Hey Mark,

Is this an expensive undertaking? Would this also cause the car to sputter at low speeds?

Was this

answer

helpful?

Yes

Tuesday, May 25th, 2010 AT 6:06 AM

MHPAUTOS

MECHANIC
31,937 POSTS

Hi there, with what you have added I would be looking at a short in a plug lead or a faulty coil, as excessive valve clearance normally won't cause the miss fire.

Mark