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4G93T Problem when Boost Kick In
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<blockquote data-quote="wirafly" data-source="post: 3356694" data-attributes="member: 10859"><p>Hi all sifu, wanna get advice from you all, I have the following problem after I have upgrade my fuel pump to walbro.</p><p></p><p>boost kick in then until 4K rpm suddenly turbo lag for 1K rpm range then boost come in again after 5K rpm, check engine light on it this happen.</p><p></p><p>Check diagnostic tool, show error knock sensor</p><p></p><p>What could the reason, </p><p></p><p>1 knock sensor?</p><p>2 Piping Leak?</p><p>3 Spark Park?</p><p></p><p>FYI, engine smooth even around 600rpm with clutch pedal fully released in 1st gear, the car running on 3 plate racing clutch, it only bring problem when check engine light on and the car feel underpower when boost kick in. <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/banghead.gif" class="smilie" loading="lazy" alt=":banghead:" title="Banghead :banghead:" data-shortname=":banghead:" /></p></blockquote><p></p>
[QUOTE="wirafly, post: 3356694, member: 10859"] Hi all sifu, wanna get advice from you all, I have the following problem after I have upgrade my fuel pump to walbro. boost kick in then until 4K rpm suddenly turbo lag for 1K rpm range then boost come in again after 5K rpm, check engine light on it this happen. Check diagnostic tool, show error knock sensor What could the reason, 1 knock sensor? 2 Piping Leak? 3 Spark Park? FYI, engine smooth even around 600rpm with clutch pedal fully released in 1st gear, the car running on 3 plate racing clutch, it only bring problem when check engine light on and the car feel underpower when boost kick in. :banghead: [/QUOTE]
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4G93T Problem when Boost Kick In