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Georgia Fiero Club Forum
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Coughing intake
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Topic: Coughing intake (Read 14144 times)
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NoobKevin
Jr. Member
Posts: 70
Coughing intake
«
on:
November 03, 2019, 07:00:12 pm »
My 86 GT is coughing through the intake when I am cruising at approximately 40 mph. Please say this is not a valve adjustment issue.
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GTRS Fiero
Hero Member
Posts: 12,510
It is what it is.
Re: Coughing intake
«
Reply #1 on:
November 03, 2019, 08:25:31 pm »
"this is not a valve adjustment issue"
Well, what RPM are you running at that speed?
Is this a new development? Did anything precipitate this?
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TopNotch
The Duke of URL
Global Moderator
Posts: 3,980
Re: Coughing intake
«
Reply #2 on:
November 03, 2019, 08:31:35 pm »
Could be timing, or a fuel problem. A recording of the sound might be helpful.
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The more complex the mind, the greater the need for the simplicity of play.
NoobKevin
Jr. Member
Posts: 70
Re: Coughing intake
«
Reply #3 on:
November 04, 2019, 10:11:29 am »
I want to say rpm’s are around 2000. Everything is a new development for me. I have put only 100 miles on the motor since completing repairs.
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GTRS Fiero
Hero Member
Posts: 12,510
It is what it is.
Re: Coughing intake
«
Reply #4 on:
November 04, 2019, 06:01:24 pm »
Does it sound like a singer sewing machine?
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NoobKevin
Jr. Member
Posts: 70
Re: Coughing intake
«
Reply #5 on:
November 10, 2019, 05:44:43 pm »
The noise sounds like a coughing with a doink sound.
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Fierofool
Global Moderator
Posts: 10,660
Re: Coughing intake
«
Reply #6 on:
November 10, 2019, 07:51:52 pm »
Check your plug wire routing again to be sure they're in the correct firing order. Sounds as if it's firing when it's on the intake stroke.
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There are three kinds of men:
1. The ones that learn by reading.
2. The few who learn by observation.
3. The rest of them have to pee on the electric fence and find out for themselves. Will Rogers
GTRS Fiero
Hero Member
Posts: 12,510
It is what it is.
Re: Coughing intake
«
Reply #7 on:
November 10, 2019, 08:48:07 pm »
Coughing, yes. "Doink" would seem to be push rods. Something hitting metal.
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Georgia Fiero Club Forum
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Coughing intake