car popping loud and no power.. help!!!

[sunnyleong94]

so, the engine came on, i checked its the coils and 02 señor...

 

i changed the coils already and haven't done on 02 señor.

 

but the problem came out before the 02 señor. anyway, the sound of the exhaust is like misfiring and popping loud when on low rev and also it pull slow compared to before.

 

thought it was the spark plug and i replaced them all, still do nothing.

 

what would be the problem?

 

i got an 3' exhaust and sport cat, but i had the exhaust running for roughly about 1000 miles before and got no problem with it.

[-Bradders-]

Sounds like a coil issue still? i had similar on an old MR2, but that had a dizzy cap which got water in it, should have seen the 6ft flames coming out the exhuast!!

[sunnyleong94]

but i've checked all coils, and they all working fine

 

anyone know where is the temp señor located?

[-Bradders-]

how do you know they are working fine if the car is coughing and spluttering?

[sunnyleong94]

all coils are sparking.... or is there any way to check them?

 

two ways i used to check, is first i have engine on and unplug one by one, if it does something to the engine then it works...

 

second way is to pull out the coils and put a spark in and turn on engine for 0.01 second lol and they all sparking good...

[Jetpilot]

So what are the fault codes?

Edited March 18, 2016 by Jetpilot

[BulletMagnet]

anyone know where is the temp señor located?

Spain? Mexico? :lol:

[sunnyleong94]

So what are the fault codes?

 

something to do with coils and 02 sensor.

but checked again, and now only coils problems

[Jetpilot]

So have you changed the coils then?

[Ekona]

Have you put the right coil packs on the right plugs?

[ZMANALEX]

You have the back two coil leads on the passenger side mixed up.

[sunnyleong94]

would wrong coil packs plug into a wrong plug do anything to the car?

[sunnyleong94]

You have the back two coil leads on the passenger side mixed up.

how you so sure about the two coils mixed up?

[Ekona]

Because your timing will be all over the place. It'll be firing the wrong cylinder at the wrong time.

[sunnyleong94]

So have you changed the coils then?

 

i have changed spark plugs recently, as soon as i changed the spark plugs, it started to backfiring.

[sunnyleong94]

so how can i do it in order? which one first.... and second and etc???

[Ekona]

This is why you always change coils and plugs one at a time

 

You'll need a diagram of which lead goes to which plug. Or a fellow Zed to copy from.

[sunnyleong94]

im abit stupid i guess. lol

 

i'll have a look and see whats going on lol

[Ekona]

 

Did you not think that maybe they needed to go back on in a certain order?

[sunnyleong94]

nope, i pulled all of them out and replace all of them... lol

 

but i didn't know it has to be in the order tho..

[Richf]

its easy to screw the order up on the right hand bank 2 and 4 i think , the cables arent routed logically

[ZMANALEX]

You have the back two coil leads on the passenger side mixed up.

how you so sure about the two coils mixed up?

 

Just trust me.

 

Cyl. #4 and #6

Edited March 18, 2016 by ZMANALEX

[370Ad]

 

Did you not think that maybe they needed to go back on in a certain order?

 

Lol brilliant!

[Ebized]

Always remember the same issue on one of the Wales weekends when someone with a lot of Zed experience managed to do the same on Wasso's car with those coils - egg on face time, but gave us a lot of laughs then and still does.

 

Sure someone will have a pic of that epic occasion.

[Ekona]

A little knowledge is a dangerous thing

 

Just messing OP, much kudos for giving the task a go, most people get terrified of it so fair play to you sir