A Little Spark Knock - ZR-1 Net Registry Forums

32valvZ · 10-02-2020

Wasnt really hot outside nor was the engine "hot"... it was normal...Noticed from a dead stop, when letting the clutch out, and keeping the rpm relatively low, I can hear a brief spark knock gurgle. A/C off and I can only hear it with my window open. If I give it a little more throttle on take off, I dont hear it, but not sure if thats just because I cant hear it over the exhaust.

Im hoping its just a bit of gasoline thats not quite up to snuff... If it isnt poor gas, how would I start troubleshooting?

I havent made any recent changes to anything and other than that the engine is running perfectly... I have a bottle of octane booster, but Im a little skeptical on using it from reading up on it here and on the forum.... Thoughts?

10-02-2020	#1
32valvZ Join Date: Nov 2007 Location: Sunshine State Posts: 1,063	A Little Spark Knock Wasnt really hot outside nor was the engine "hot"... it was normal...Noticed from a dead stop, when letting the clutch out, and keeping the rpm relatively low, I can hear a brief spark knock gurgle. A/C off and I can only hear it with my window open. If I give it a little more throttle on take off, I dont hear it, but not sure if thats just because I cant hear it over the exhaust. Im hoping its just a bit of gasoline thats not quite up to snuff... If it isnt poor gas, how would I start troubleshooting? I havent made any recent changes to anything and other than that the engine is running perfectly... I have a bottle of octane booster, but Im a little skeptical on using it from reading up on it here and on the forum.... Thoughts? __________________ [B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] Last edited by 32valvZ; 10-02-2020 at 09:11 AM.