Reply to thread

See what others are reading now! Try Forums > Current Activity

Message: <blockquote data-quote="k0pi" data-source="post: 1064500671" data-attributes="member: 117648">hey bro jebatdex - have you tried sudden flooring to accelerate and getting fuel surge or bigger jerks (floor wide open throttle at 3000rpm and let it accelerate to 6000rpm) in 3rd or 4th gear? If you do... then that's the fuel pump problem. It does start with these small jerks first coz the fuel pump may sometimes stop momentarily.... and this is on stock Mikuni throttle, fuel regulator, ECU... if you decided to change the fuel pump, don't go for the cheap ones usually sold between RM120-160 and do buy from Proton Parts center coz there's many-many-many shop now selling fake denso pumps (irritatingly 100% looks the same as the original) that'll phucked up less than 2 years and worse - they don't deliver 110lph flow - less than that. Original Proton-denso pumps may last until 15yrs and support 102lph good for upto 150hp NA application tuned with 240cc injectors (4g91/92/93) wthout getting leaned out. Cost of the ori pump is RM230-250/unit. other than that if you're getting the small jerks throughout all RPMs till redline (soft or hard accel) wthout the a/cond turned on (jerks frequently if AC on) but doesn't experience big jerk like the engine starving for fuel - just small bumpy jerks even if you throttle down 100% to redine, its the crank pulley due to the rubber lining at wrapped around the center of the pulley has weakened (like mounting bush) and may have been able to shook, causing misstiming - and the jerks won't happen when the engine is still cold or newly warmed. But this problem may lead to bent valves (starting with valve seal damage) on long ignore. Cari pulley kedai potong sudaa... new OEM ones... think it costs 400 bucks? can't remember... other than that if you or someone have touched the TPS sensor and tweaked it before / or you've got new throttle body - get someone to tune it back wth a multimeter/ohmmeter. to get the correct TPS value at 0.48/0.49/0.50V (0.490V the best for 4G92p). Sometimes the TPS wrong adjustment causes jerks too because it controls the behavior of the injectors (close/open frequency = amount of fuel vs. amt of throttle given) and the igniton timing. Not only that... correct TPS tune may give your 92p good fuel consumption averaging 13km/L at least and loads of low-end torque... if its stock. First diagnose for this - reset the ECU. The jerks wont happen the first drive after reset. not really sure about the ECU logic tho... other than that.... can't brain edi... those jerkings are pain in the arse to solve...</blockquote>

Verification

The Marketplace Latest

BRAND NEW original rare Yokohama ADVAN Racing RG4...
- Started by david tao
- Chassis and Wheels
original rare Yokohama ADVAN Racing RZ2 RZii...
- Started by david tao
- Chassis and Wheels
original rare Yokohama ADVAN Racing RG 16x7jj...
- Started by david tao
- Chassis and Wheels
original rare Yokohama ADVAN Racing RG 16x7jj...
- Started by david tao
- Chassis and Wheels
original rare Rays Volk Racing TE37SL 18x9jj offset...
- Started by david tao
- Chassis and Wheels
Spoon Sw388 18x10J+40 5H120 Rim Rims Civic FL5 Type R
- Started by aycy
- Chassis and Wheels
Spoon Crane Neck Wing Carbon Spoiler GT Wing Honda...
- Started by aycy
- Exterior and Body
Honda Jazz/Fit GK Mugen body kit
- Started by jeff6126
- Exterior and Body
original TWS Taneisya P1 racing 17x8.5jj offset +28...
- Started by david tao
- Chassis and Wheels
original rare Rays Volk Racing CE28RT 18x9jj offset...
- Started by david tao
- Chassis and Wheels

Posts refresh every 5 minutes

14 inch tyre, high grip in dry and wet required

Currently in a process of BOLT on turbo, a myvi 1.3 first edition, planning to keep stock rims "sleeper"
What are your recommendation for a super grip in both dry and wet for that tyre size, not mistaken
its...

Electric cars crash quietly as well w/video

https://www.zerotohundred.com/wp-content/uploads/2011/05/electric-600x332.jpg

One of the biggest obstacles when electric cars first came about was the lack of noise it produced, taking away one of the first warning...

HPC Track Day

Hey guys,

Any Skyline owners out there registered for this December HPC track day in Pasir Gudang Johor?

Anyone interested?

Kenny

Search

Enjoying Zerotohundred?

Log-in for an ad-less experience

Reply to thread

The Marketplace Latest

BRAND NEW original rare Yokohama ADVAN Racing RG4...

original rare Yokohama ADVAN Racing RZ2 RZii...

original rare Yokohama ADVAN Racing RG 16x7jj...

original rare Yokohama ADVAN Racing RG 16x7jj...

original rare Rays Volk Racing TE37SL 18x9jj offset...

Spoon Sw388 18x10J+40 5H120 Rim Rims Civic FL5 Type R

Spoon Crane Neck Wing Carbon Spoiler GT Wing Honda...

Honda Jazz/Fit GK Mugen body kit

original TWS Taneisya P1 racing 17x8.5jj offset +28...

original rare Rays Volk Racing CE28RT 18x9jj offset...

Posts refresh every 5 minutes

Recent Posts

2026 Vios HEV launched with Local Battery Assembly - UMW Toyota Motor

SPPF: The Future of Automotive Surface Protection - A Technical Overview

Upping Wira 1.5 MMC performance

Volvo Malaysia Launches Locally Assembled ES90 Electric Sedan

AMPANG mari!!ZTH member

Search

Online now

Enjoying Zerotohundred?