swynx
Active Member
- Joined
- Mar 26, 2008
- Messages
- 2,401
- Reaction score
- 9
- Points
- 38
- Age
- 31
- Location
- lewiston idaho
- Vehicle Year
- 1994
- Make / Model
- Mazda
- Engine Size
- 4.0
- Transmission
- Manual
94 4.0
so started up the truck and noticed that it pretty much quits above 3k rpm, and i have a loud hiss when floored. it wont hardly do 65 iether. the hiss sounds like its coming from the passenger side.
its not missing, and it refuses to go above 4k, and its hard to even get it there. i pulled codes, i think it was 171, any who the book says its an 02 sensor running lean on bank 1, thats passenger side? i replaced both 02 sensors less that 2k miles ago. pulled them out they have barely discolored, tryed spraying them with maf cleaner, it did not help.
new
iac, maf, tps, fpr, fuel filter, fuel pump, spark plugs, coil, wires, both 02 sensors, engine coolant temp sensor, thermostat. i have new fuel injectors just need to put them in.
maybe it needs new gaskets on the top end, as its around 300k miles.
it only makes the hissing sound when past half throttle, i sprayed the engine down for like 5 minutes with the hose, while at idle, and while a buddy was gassing it making the hissing sounds. ive used propane to try and find a leak, but i have had no luck finding it.
also, i have a new cannister thing (agpete posted about it in another thread) but i havent installed it. i havent pulled the spark plugs iether, but its only been ran like this for a half tank. i was going to unplug the 02 sensors and see if any thing changes, and i also just read about the cat blowing the insides out, and having no power above 2k rpm with a whooshing sound. just looking for insight. thanks.
so started up the truck and noticed that it pretty much quits above 3k rpm, and i have a loud hiss when floored. it wont hardly do 65 iether. the hiss sounds like its coming from the passenger side.
its not missing, and it refuses to go above 4k, and its hard to even get it there. i pulled codes, i think it was 171, any who the book says its an 02 sensor running lean on bank 1, thats passenger side? i replaced both 02 sensors less that 2k miles ago. pulled them out they have barely discolored, tryed spraying them with maf cleaner, it did not help.
new
iac, maf, tps, fpr, fuel filter, fuel pump, spark plugs, coil, wires, both 02 sensors, engine coolant temp sensor, thermostat. i have new fuel injectors just need to put them in.
maybe it needs new gaskets on the top end, as its around 300k miles.
it only makes the hissing sound when past half throttle, i sprayed the engine down for like 5 minutes with the hose, while at idle, and while a buddy was gassing it making the hissing sounds. ive used propane to try and find a leak, but i have had no luck finding it.
also, i have a new cannister thing (agpete posted about it in another thread) but i havent installed it. i havent pulled the spark plugs iether, but its only been ran like this for a half tank. i was going to unplug the 02 sensors and see if any thing changes, and i also just read about the cat blowing the insides out, and having no power above 2k rpm with a whooshing sound. just looking for insight. thanks.
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