PORTnPOLISH
New Member
- Joined
- Feb 19, 2011
- Messages
- 146
- Reaction score
- 1
- Points
- 0
- Location
- Tonica, IL
- Vehicle Year
- 1994
- Make / Model
- Mazda
- Engine Size
- 4.0
- Transmission
- Manual
Hello, I have been reading through researching this issue since I developed this issue last week. I spent today trying to repair it but the problem only worsened and became a little stranger. Excuse my typing...its late and I smashed my thumb pretty good today and im typing this from my phone laying in bed.
PROBLEM:
I bought the truck and drove it home no problems but noticed I had a hard time maintaining speed but I figured it was going.to.take getting used to. I started driving back and forth to work 100% highway and halfway through the week I started working on my custom exhaust setup. Once I removed the muffler for measuring and I was driving to work the next day I noticed that a the problem of maintaining speed was worse and that it was popping and bogging while at mod throttle trying to cruise. Light or full throttle would kick back to normal.when going to wit the engine seems to really jump in power and the sound changed entirely. Through the week the problem got worse and worse and that brings me to today. I went to the auto store and picked up the parts for my exhaust and the repair items. After the repairs it was running better then ever for about a miles and then it got worse then ever and now will not even idle normally or under light to kid throttle. Will run great wot. Gas mileage is now terible I filled up th othr day and I've gone 140 miles and im on E!!! About 10 miles per gallon.
REPAIRS:
-fuel filter
- plugs and wires gapped to .054 (old ones looked all lean and were gapoped to .035
-cleaned maf with maf cleaner spray,maf was missing screws so I replaced them, I cleaned the seating area to assure no air leaks, fixed hose clamp on intake prevent leaks
-cleaned air filter...wasn't dirty
-tested tps ... good
-tested maf ...was good
-checked for vac leaks and found 0
- pcv valve vac.line was Willy and collapsed under vacuum so I changed it.
- seafoamed her with old plugs in
Some.things I found strange were that if I pull plug wires 1,2,3 I have puts of spark but the engine sound remains th same. Also when it "bogs" the engine noise gets quiet and looses power but when you go wot it gets power back and gets loud angain. You can play with it and maintain about 49 but it pops like crazy.
PROBLEM:
I bought the truck and drove it home no problems but noticed I had a hard time maintaining speed but I figured it was going.to.take getting used to. I started driving back and forth to work 100% highway and halfway through the week I started working on my custom exhaust setup. Once I removed the muffler for measuring and I was driving to work the next day I noticed that a the problem of maintaining speed was worse and that it was popping and bogging while at mod throttle trying to cruise. Light or full throttle would kick back to normal.when going to wit the engine seems to really jump in power and the sound changed entirely. Through the week the problem got worse and worse and that brings me to today. I went to the auto store and picked up the parts for my exhaust and the repair items. After the repairs it was running better then ever for about a miles and then it got worse then ever and now will not even idle normally or under light to kid throttle. Will run great wot. Gas mileage is now terible I filled up th othr day and I've gone 140 miles and im on E!!! About 10 miles per gallon.
REPAIRS:
-fuel filter
- plugs and wires gapped to .054 (old ones looked all lean and were gapoped to .035
-cleaned maf with maf cleaner spray,maf was missing screws so I replaced them, I cleaned the seating area to assure no air leaks, fixed hose clamp on intake prevent leaks
-cleaned air filter...wasn't dirty
-tested tps ... good
-tested maf ...was good
-checked for vac leaks and found 0
- pcv valve vac.line was Willy and collapsed under vacuum so I changed it.
- seafoamed her with old plugs in
Some.things I found strange were that if I pull plug wires 1,2,3 I have puts of spark but the engine sound remains th same. Also when it "bogs" the engine noise gets quiet and looses power but when you go wot it gets power back and gets loud angain. You can play with it and maintain about 49 but it pops like crazy.