Hickup when accelerating !

[unid87]

Hi my beloved Micra friends!
I tried browsing all the topics but couldn't find a specific answer to my issue.
So..
80K 1.3 Si bought in feb ..had this issue from the first day i was driving it but now is worse.
when i accelerate ..4 out of 10 times has..like a hickup..looses power..revs..for a second .
It happens in any gear..and sometimes is happening when i do constant speed too.
I really don't want to take everything apart..maybe someone had this issue and knows why it happens.
Thank you..in advance!


Sent from my SM-G900F using Micra Sports Club mobile app

 

[Agent_Sm1th]

Does it feel like an ignition or fuel fault. Can you recreate the fault by just reving it. Failing fuel pump, faulty HT leads ?

 

[unid87]

At a standstill reving it doesn't encounter the issue.

Sent from my SM-G900F using Micra Sports Club mobile app

 

[Matiz]

hi

I think I've got same issue, but it occurs mostly while higway accelerating, sometimes I can feel it during gear shifting too (anchor effect)
I can feel it only during WOT ,overall, during "hard charging". (forza anyone? )

I think It can be fuel-based problem, because mine is shaking at idle like a diesel, also takes around 8-9l/100km city, 7.5l road driving.
I bet theres too much fuel injected, because before buying the car I've checked the plugs and there was black smoke at them (fuel overflow)

other theory, not asked yet at forums etc.

Is stretched out timing chain. dunno, maybe the cam timing is changing or smth...

but theres none sounds of faulty chain (I think) so it is only theory.

 

[unid87]

I noticed mine drinks a lot of fuel too... i blamed the 175/65/14 tyres ..but not sure if it's them to blame or something else

Sent from my SM-G900F using Micra Sports Club mobile app

 

[infinity]

I noticed mine drinks a lot of fuel too... i blamed the 175/65/14 tyres ..but not sure if it's them to blame or something else

Sent from my SM-G900F using Micra Sports Club mobile app

Tyres won't change much, I ran 195/55 r15 with barely any change in milage ( motorway driving).

 

[Matiz]

find out, short after joing the forums, that high fuel consumption is lambda fault, theres tutorials how to diagnosis it.

 

[unid87]

I think my "hickup" could mean a new clutch needed

Sent from my SM-G900F using Micra Sports Club mobile app

 

[John_D]

Try cleaning the MAF sensor (air flow) by removing it and spraying the inside with carb cleaner. I had a similar problem with a Saab turbo and cleaning the MAF cured it. A dirty MAF sensor gives an incorrect air volume reading to the ECU which then fuels wrongly.