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04-09-2019
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#1 |
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Join Date: May 2017
Location: Delaware
Posts: 48
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Hard to Start...
My 90 Z always take a little bit to start.......I crank it for about 5 seconds, let off the key then crank it again and it fires up. Is that something common with these cars or an issue I should look into?
Thank you, Tony Sent from my iPhone using ZR-1 Net Registry |
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04-09-2019
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#2 |
 
Join Date: Oct 2017
Location: TX
Posts: 1,961
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Re: Hard to Start...
Seems to me that is a bit too long before it fires off. Might check fuel pressure with key on and bleed down rate after turning key off.
Be careful letting off the key before it starts. They are prone to backfire and blow off vacuum lines. More times than not this will result in a plenum removal to correct. 
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Kenny 1990 #442 
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04-09-2019
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#3 |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Hard to Start...
I turn the ignition to ON a few seconds (like 3-4ish) before rolling the starter. My '90 ZR-1 usually take a 2-4 seconds after the fuel rail is pressurized, depending on how long it was idle, before it fires up. My wife's 91 ZR-1 fires much quicker - only one or two seconds in most cases.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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04-10-2019
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#4 |
 Join Date: Feb 2011
Location: Clayton, North Carolina
Posts: 1,133
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Re: Hard to Start...
Never turn the key off until it fires up. I’ve had backfires that have blown out injectors twice. Other bad things can happen.
When I installed Marc H’s chip, if fires immediately. Also old gas can also contribute to the delay in firing up. Sent from my iPhone using ZR-1 Net Registry
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Lou[COLOR="Red"][B][SIZE="4"][/SIZE][/B][/COLOR] |
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04-10-2019
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#5 |
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Join Date: May 2017
Location: Delaware
Posts: 48
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Hard to Start...
Thanks guys......what are you all using for fuel pressure gauges? The old gas is almost out as well...
Sent from my iPhone using ZR-1 Net Registry |
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04-11-2019
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#6 | |
Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,566
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Re: Hard to Start...
Quote:
Simplest way to avoid trouble is to do exactly as he said! Experience teaches you this! Great advice! Marty |
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04-11-2019
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#7 | |
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Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Hard to Start...
Quote:
__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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04-11-2019
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#8 |
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Join Date: May 2017
Location: Delaware
Posts: 48
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Re: Hard to Start...
Paul,
I hate HF but I will head there this weekend! Thank you! Sent from my iPhone using ZR-1 Net Registry |
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04-11-2019
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#9 |
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Join Date: May 2017
Location: Delaware
Posts: 48
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Re: Hard to Start...
Thanks again guys, I will time joe long it takes to start as well. Last thing I want to do is pull this plenum again as it was almost impossible to seal
Sent from my iPhone using ZR-1 Net Registry |
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04-12-2019
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#10 | |
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: Hard to Start...
Quote:
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[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] |
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Linear Mode
