Flat Spot

change the rotor button

cap is a bit old, but should still work fine

can you take a pic of your ignition lead, the part that goes down the head. close up like above.

ecu man you need to change you rank title to 7.

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Originally Posted by ECU-MAN

change the rotor button

cap is a bit old, but should still work fine

can you take a pic of your ignition lead, the part that goes down the head. close up like above.

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Will take better pics tomorrow, but luckily i got these today. Two dizzy side and one sparkplug side

http://img.photobucket.com/albums/v47/aimre/leads3.jpg
http://img.photobucket.com/albums/v47/aimre/leads2.jpg
http://img.photobucket.com/albums/v47/aimre/leads.jpg

Quote:

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Originally Posted by kyle

ecu man you need to change you rank title to 7.

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..lol..

can you please take a picture of the lead ( top pic ) on the other angle, I need to see the shaft of the lead.

cheers

check resistance of leads,timing,and fuel sample(wat fuel u use??)

98 fuel, tried weq's spare leads, and same thing

Quote:

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Originally Posted by aimre

Hey guys,

i seem to have a small problem that i cant get rid of.
The problem is, i have a flat spot through the rev rangem at about 2000 rpm when light throttle is applied, if i apply slightly more throttle, i can get through the flat spot, then drop back to orriginal throttle position and it will continue up the revs on its merry way.

To try and fix this, i have:

Changed spark plugs
Fuel filter
and inspected the dizzy cap (without removing it) for damage.

What could this be and how do i fix it?? :confused::confused::confused:

Thanks

PS. Ive searched

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What sound accompanies the fat spot?

If the flat spot corresponds with a missfire or crackle & pop out the tail pipe, it's ignition.
In this case follow ECU-MAN's instructions.
If the engine simply goes dead~flat, it's fuel.

1) Check TPS setting, if incorrect, you could be on the overrun fuel cut.
2) Check fuel pump - earth & inlet filter for obstruction
3) Check engine earth

i also have a "flat spot" - though it is not an issue, it is very mild and simply feels like the engine "picks up" more once past the 3000 mark...

it happens between take off to 3000ish, it just feels like timing is not *quite* enough...

it is only during very light throttle though...

is this similar to your "flat spot" amire?

is your ECU etc stock?

Quote:

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Originally Posted by TODA AU

What sound accompanies the fat spot?

If the flat spot corresponds with a missfire or crackle & pop out the tail pipe, it's ignition.
In this case follow ECU-MAN's instructions.
If the engine simply goes dead~flat, it's fuel.

1) Check TPS setting, if incorrect, you could be on the overrun fuel cut.
2) Check fuel pump - earth & inlet filter for obstruction
3) Check engine earth

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There isnt any exhaust noise indicating ignition.


How do i do 1)?

Do our cars only have one intank fuel pump?

Quote:

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i also have a "flat spot" - though it is not an issue, it is very mild and simply feels like the engine "picks up" more once past the 3000 mark...

it happens between take off to 3000ish, it just feels like timing is not *quite* enough...

it is only during very light throttle though...

is this similar to your "flat spot" amire?

is your ECU etc stock?

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Mine only happens at light throttle. I take of normal, then when i get to about 2500 it looses power, so much so, that u sometimes lurch forward in your seat, this power loss happens for about 1000 rpm and u get through it by putting slightly more gas.

It usually only happens in gears 1 and 2 (or at least i notice)

yes i have this problem too
only happens when its cold and there is light throttle applied

Quote:

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Originally Posted by aimre

take of normal, then when i get to about 2500 it looses power, so much so, that u sometimes lurch forward in your seat, t

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yes, sorry, very different 'flat spot' to mine...

in that case, it could quite well be fuel related, maybe even fuel injectors... how many KM on the car/engine?

to check for 1) TPS sensor you need a multimeter and a sewing pin - can be easily described if you want to try it... but a bad TPS sensor setting will usually demonstrate other drivability symptoms...