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09-27-2018
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#1 |
 Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Hesitation than cleared itself
Like the title says hesitate than clear..
Have not driven my Z since Carlisle..Took it out this morning....Car ran fine for first five -six minutes.....Upon acceleration it began to hesitate than it would clear itself.....Did it about five or six times....Had car out for about 25 minutes... Idle would also drop at times when I was stopped....Car is ported and cammed 91... Accel injectors..Swapped out fuel filter about 7,000 miles ago.... Thought maybe its bad gas but I filled up the w end of carlisle....Car runs great up until this morning... Thoughts? |
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09-27-2018
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#2 |
 
Join Date: May 2007
Location: Westminster, Maryland
Posts: 3,689
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Re: Hesitation than cleared itself
Are you referring to hard acceleration (secondaries opening) or just mild acceleration in traffic?
Do you have access to a Tech 1 or similar scanner? Jim |
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09-27-2018
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#3 |
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Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: Hesitation than cleared itself
Hey Jim..
Secondaries deleted..I would say normal acceleration....Roughness at idle at times as well... |
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09-27-2018
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#4 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Hesitation than cleared itself
Definitely sounds like a fueling issue. Did it stop after it was completely warmed up? Can you check fuel pressure upon acceleration? Are you still running with the original fuel pumps?
How long since Carlisle (I should know this)? Steve Sent from my XT1585 using ZR-1 Net Registry mobile app |
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09-27-2018
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#5 |
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Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: Hesitation than cleared itself
Hey Jim...
It performed the way its supposed to when it got fully warmed up....That's my next step, check the fuel pressure..Don't know if they are original fuel pumps... Will take it to my mechanic maybe Saturday morning....Before this morning, last time I used car was the Sunday of carlisle weekend.. |
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09-27-2018
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#6 | |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Hesitation than cleared itself
Quote:
Steve Sent from my XT1585 using ZR-1 Net Registry mobile app |
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09-27-2018
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#7 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Hesitation than cleared itself
Quote:
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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09-27-2018
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#8 |
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Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: Hesitation than cleared itself
Even if its not fully warmed up it should not have done this.....The last few mins of my drive it seemed to have gone away until I was backing into my garage I felt the idle start getting rough again...
Will see if my mechanic is in a " good mood " Saturday morning.....Will check for fueling issue.. |
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09-27-2018
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#9 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Hesitation than cleared itself
Quote:
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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09-27-2018
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#10 |
 
Join Date: Dec 2007
Location: NYC
Posts: 1,189
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Re: Hesitation than cleared itself
Might be a bad O2 but that will throw a code check engine light come on at all?
Sent from my iPhone using ZR-1 Net Registry
__________________
90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD" |
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