Stuttery. Hesitating Glanza

[Mr. Chem]

Hi all,

I'm having some issues with my glanza. I've been finding that around 3500-4000 revs it hesitates at full throttle and boost. If I back up to 0.5bar it starts pulling again.

Low revs and high revs are fine.

The car is running 1bar on a ct9 on a jam ECU.

I've only noticed it doing this when I upped boost from 0.8 to 1 bar.

So far I've changed plugs, dizzie cap and rotor arm. The leads are Ngk blues about a year old and still at a good resistance level.

I have looked at the coil, cleaned up the base plate and fitted another earth to it.

No fault codes stored.

I've tried unplugging the lambda sensor

I don't know if it's related, as it's always done this, but after a hot start the engine revs very low for a few minutes.

Thanks

[Gainzy]

Are you running an aftermarket fpr

[Mr. Chem]

Standard fpr

[mikey4410]

what are your afrs at full boost ??

[Gainzy]

You might aswell change the leads could try cleaning the icv and tps it was happening to my mates V recently I have just txt him if he got sorted.

[Mr. Chem]

No wide band I'm afraid

Budget is seriously limited

[funny onion]

I'd say it's running lean if it was ok at 0.8 but not at 1 bar and nothing else has changed. get a rrfpr with gauge on it and richen it up slightly. Hard to do without a wideband though, you need to be careful not to have it too rich or you'll suffer from borewash. But if it is running lean that's also not good for the engine...

[Gainzy]

My mate got back in touch before, he changed his leads so it's worth a shot I would.

[Socks]

What pump is in it?

[TrisK]

I would try leads.

I would also try gapping your plugs down slightly.

[mikey4410]

thats a good point from socks there.

what he said

[Mr. Chem]

Plugs are gapped to 0.8mm.

I guess I'll have to try a different set of leads then

Hopefully that works

It's running a tuning developments 255lph pump

[Socks]

Plugs are gapped to 0.8mm.

I guess I'll have to try a different set of leads then

Hopefully that works

It's running a tuning developments 255lph pump

My TD pump died after 1 year of use... It was Chinese.

A Walbro would be a better spend of money imo...

To my it sounds like fueling. If you've serviced the ignition system...

[Mr. Chem]

Well that's irritating.

I'll see about a pump then. Seems strange it pulls fine at higher revs though

[Gainzy]

I would change the leads first my non branded fuel pump has ran 4 years no problem

[Socks]

I would change the leads first my non branded fuel pump has ran 4 years no problem

Yeh I know of a few that have lasted too. Hit or miss I guess...

Magnecores are a wise purchase anyways tbh!

[Vturbo]

My TD fuel pump has been going for about 3 years now

[Mr. Chem]

New symptom - smoke during the stutter.

Stutter is worse under load (4th and fifth uphill)

Smoke appears white I think. It's not much and there is none on idle, just when it stutters.

[Gainzy]

New symptom - smoke during the stutter.

Stutter is worse under load (4th and fifth uphill)

Smoke appears white I think. It's not much and there is none on idle, just when it stutters.

They say white is water, is your fan kicking in when warmed right up? Check your water levels just incase

[Mr. Chem]

Not lost a drop.

Fan works perfect.

White can also be over or under fuel

[Gainzy]

I would buy some ht leads and go from there I still reckon your not getting a good spark

[Stu]

Know anyone with a wideband?