1993 mazda b2600I engine knocking

Asked by Nov 04, 2013 at 06:11 PM about the 1993 Mazda B-Series Pickup 2 Dr B2600i Extended Cab SB

Question type: Maintenance & Repair

My 1993 mazda b2600i runs great!  But, if I give more than about 25% throttle, it knocks like crazy and it does not feel like it picks up any faster.  any ideas??

7 Answers

23,765

A couple of things (besides a plain ol' wore out motor): Plugged exhaust/cat: carbon build up on the piston(s): Jumped timing: bad fuel: mis-routed plug wires

1 out of 1 people think this is helpful.
45

If it idles good, OK, But on acceleration pressure it fails. But it sounds like it needs air, intake to me Just my guess

23,765

Sounds more like a plugged cat.

hmmm. that could me, The car has a new exhaust from the cat back

23,765

A plugged catalytic Converter will cause a backfire condition - lean - no air out - no air in. You could hook up a vacuum gauge and watch how it acts as you increase RPM to say 2500 and hold it there for several seconds - is the reading low or does it fall off at a steady speed? You could disconnect the exhaust at the manifolds and run the engine - noisy but effective. A muffler shop has the proper tools to make a hole in the pipe and measure the back pressure.

would it matter that i dont have any backfiring?

23,765

No.

Your Answer

Add photo

Related Questions

B-Series Pickup

Looking for a Used B-Series Pickup in your area?

CarGurus has 189 nationwide B-Series Pickup listings starting at $2,495.

ZIP:

Search Mazda B-Series Pickup Questions

Mazda B-Series Pickup Experts

#1 BoholMark
BoholMark
Reputation 360
#2 Tracy Hooks
Tracy Hooks
Reputation 220
#3 Michael Tutty
Michael Tutty
Reputation 210
View All

Related Models For Sale

Used Ford Ranger
189 Great Deals out of 5,983 listings starting at $1,299
Used Ford F-150
2,229 Great Deals out of 208,159 listings starting at $1,499
Used Chevrolet S-10
12 Great Deals out of 1,358 listings starting at $1,595
Used Dodge Dakota
110 Great Deals out of 3,849 listings starting at $1,199
Used Toyota Pickup
105 listings starting at $3,995
Used Mazda MX-5 Miata
43 Great Deals out of 4,407 listings starting at $1,995
Used Chevrolet Camaro
157 Great Deals out of 32,775 listings starting at $1,995
Used Nissan Pickup
13 listings
Used Jeep Wrangler
267 Great Deals out of 18,558 listings starting at $2,995

Used Cars For Sale

2001 Mazda B-Series Pickup For Sale
35 listings starting at $3,500
2000 Mazda B-Series Pickup For Sale
20 listings starting at $2,495
1998 Mazda B-Series Pickup For Sale
28 listings starting at $3,599