car misses at low rpms under load?

[Ryan]

450 was the highest I've had in a long while. 300 is common too.

[Daninski]

I put amsoil in mine this spring and either my gas gauge is sticking or my mileage has increased by 25%. I just need to drive the car more to check the odometer.

[mikeinaus]

450 was the highest I've had in a long while. 300 is common too.

i honestly dont see how people are getting 400-500km a tank. i always fill up once my low fuel light comes on and 95% of the time never much past 300km. i do pretty much all city driving, and the most i have gotten is like 380km. i can shift at 2500-3000rpm for an entire tank, and shift at redline for the entire tank and still come up around the same milage.

im beyond broke right now, when i get some money ill get that cap replaced. and ill have a look at my plugs and see how they look. how long should plugs typically last? i bought mine a year and a half ago and have put maybe 15000-20000km at most on them.

[Ryan]

See, I do about 90% highway driving. Keeping it at 95 instead of 120 makes a big difference, too. Just pisses off the people behind me

[_-Night-Shade-_]

I was getting no less than 500km a tank with my K8. After I fix things with my ZE it should be around the same.

[mikeinaus]

I was getting no less than 500km a tank with my K8. After I fix things with my ZE it should be around the same.

i just dont get it. even when my cars running great ive never had good milage. breaks arnt rubbing, new wheel bearings in rear, alignment is good, plugs/wires have been replaced, new o2 sensors, fuelpump/filter have been replace, even 14" rims with smaller tires. unless my 2.25" high flow exhaust is too big or something i just dont see my car getting great milage. swapping my motor didnt even really improve my milage and that was coming from one running on 5 cylinders. the only thing that has seen an improvement was the plug wires. was getting 225km a tank before and made it to 300km after. ive just accepted my cars milage sucks and i dont think theres much i can do about it.

[Ryan]

remove the injectors in cyls 4, 3, and 1.

Heh.

[_-Night-Shade-_]

I was getting no less than 500km a tank with my K8. After I fix things with my ZE it should be around the same.

i just dont get it. even when my cars running great ive never had good milage. breaks arnt rubbing, new wheel bearings in rear, alignment is good, plugs/wires have been replaced, new o2 sensors, fuelpump/filter have been replace, even 14" rims with smaller tires. unless my 2.25" high flow exhaust is too big or something i just dont see my car getting great milage. swapping my motor didnt even really improve my milage and that was coming from one running on 5 cylinders. the only thing that has seen an improvement was the plug wires. was getting 225km a tank before and made it to 300km after. ive just accepted my cars milage sucks and i dont think theres much i can do about it.

2.25" IS too big for the K8, that's what I'm running with my ZE right now. You're killing your bottom end. In fact that's even too big for your top end.

[mikeinaus]

i know its too big but i do plan on eventually getting a de or a ze. i didnt really see a point in doing the exhaust twice so i just planned ahead. it is a k8 afterall, if i was that worried about performance i wouldnt be driving a k8 mx3 would i? performance aside i doubt the exhaust could lower fuel economy 150-200km a tank

[_-Night-Shade-_]

it is a k8 afterall, if i was that worried about performance i wouldnt be driving a k8 mx3 would i?

What's that supposed to mean...?

i know its too big but i do plan on eventually getting a de or a ze. i didnt really see a point in doing the exhaust twice so i just planned ahead.

That's why you drive to the exhaust shop after the swap, or suffer as you currently are.

performance aside i doubt the exhaust could lower fuel economy 150-200km a tank

Yes, actually it could. Read about exhaust scavenging.

[tmac4t4]

my car has similar issues..ive swapped out the cap/rotor/plugs/wires but it still feels like it has a bit of a miss..i cant complain about my gas milieage as i can still get 400-450 km out of a tank no problem (more if its all highway driving)