hesitates on boost at 4000-4500 rpm

[ramses974]

Hi
i have a problem with my Seo, it seems not boosting right at 4000-4500rpm as if it was jerking or bouncing...
i read a lot on all forum that said it is common to ignition :lead-cap-dizzy-spark-plug -igniter etc
I have spark plugs and plugs new
how to chek correctly the rotor arm and dizzy
some people said that they can break etc
can someone can help me how to chek these components
thanx
:drive:

(PS: only 2 4efte engine in my island -PASEO swap that is mine and a EP82 )

 

[dac69er]

take a picture of the distributor cap (internally) and rotor arm and we should be able to tell from that.

are the plugs and leads new?

 

[ramses974]

take a picture of the distributor cap (internally) and rotor arm and we should be able to tell from that.

are the plugs and leads new?

ok i will do that...there is a lot of rain and wind ..in ly island

yes plugs and leads are new , i have change them to verify

 

[Rev]

Also any water in the plug holes?

 

[ramses974]

Also any water in the plug holes?

sure ther is no water

 

[ramses974]

 

[dac69er]

Hard to tell. If they have never been changed I would consider changing them anyway to rule them out.

 

[SupaStu]

I would go with what Duncan said, if the terminals on the distributor are worn, get it changed, ive had something similar and changing it fixed it.

 

[ramses974]

yes that seems worn..

 

[ramses974]

Hard to tell. If they have never been changed I would consider changing them anyway to rule them out.

they have never been changed ,and the coil too

 

[ramses974]

can someone can indicate me a shop to buy these components as i am very far of Europe( a shipping to France will be easy for me )

 

[ramses974]

Hi
some news
1/coil -igniter changed
2/rotor changed
3/distributor changed
new map

still the same problem

 

[ramses974]

fuel pump and fuel line was checked and changed too ( fuel filter etc )

 

[Guye]

I am curious about what psi of boost you are running and the gap on your spark plugs.

 

[ramses974]

I am curious about what psi of boost you are running and the gap on your spark plugs.

i can rassure you about 2 things :
1/ it is not fuel cut i am at 0.6bar only to eliminate this théory
2/these are exactly the same gap as the spark are new and oem from toyota

 

[HKS111]

Have you tried changing the knock sensor?

 

[Guye]

i can rassure you about 2 things :
1/ it is not fuel cut i am at 0.6bar only to eliminate this théory
2/these are exactly the same gap as the spark are new and oem from toyota

Actually I wasn't thinking something as simple as fuel cut. Depending on your turbo/cfm/boost levels there is a possibility that the spark at the plugs may have been "blown out". That's why I was curious about both the boost level and the spark plug gap. There are times where the oem plug gap is inadequate. Well...my curiousity has been satisfied.

 

[ramses974]

Have you tried changing the knock sensor?

yes knock sensor changed with a friend of mine to test and eliminate some theory...

The more curious is that happears only after changing the timing belt ... i notice that after 4 months ....not sure there is a relation

 

[ramses974]

Have you tried changing the knock sensor?

yes knock sensor changed with a friend of mine to test and eliminate some theory...

The more curious is that happears only after changing the timing belt ... i notice that after 4 months ....not sure there is a relation

 

[ramses974]

a friend of mine help me to verify the timing belt ... 2 tooth outside the timing mark... i will finish all this monday and i will tell you if it causes this problem ( i hope )