1984 C4 emissions test Fail
Thread Starter
1st Gear
Joined: Sep 2023
Posts: 1
Likes: 0
1984 C4 emissions test Fail
Hi!
I need your support in order to know from your experience about a 1984 C4 Corvette auto transmission.
I am restoring this car and as part of the challenge I did the emissions test and the result was: 10X over the limit of Hydrocarbons and too much gas on the mix.
How can I solve this issue? Is this just a carburetor issue? In general the car does not smoke but smells like a bit.
Additionally I can notice this is a very hot engine with oil temp up to 102°C / 215°F.
I appreciate your feedback =)
I need your support in order to know from your experience about a 1984 C4 Corvette auto transmission.
I am restoring this car and as part of the challenge I did the emissions test and the result was: 10X over the limit of Hydrocarbons and too much gas on the mix.
How can I solve this issue? Is this just a carburetor issue? In general the car does not smoke but smells like a bit.
Additionally I can notice this is a very hot engine with oil temp up to 102°C / 215°F.
I appreciate your feedback =)
Melting Slicks
Joined: Dec 2009
Posts: 2,231
Likes: 284
Oil temp is fine. What's the coolant temp? You'll need a scanner to see what the computer sees vs. what the gauge show you. The 84s had a troublesome coolant temp sensor that would cause rich running conditions.
Intermediate
Joined: Sep 2022
Posts: 26
Likes: 1
Hi!
I need your support in order to know from your experience about a 1984 C4 Corvette auto transmission.
I am restoring this car and as part of the challenge I did the emissions test and the result was: 10X over the limit of Hydrocarbons and too much gas on the mix.
How can I solve this issue? Is this just a carburetor issue? In general the car does not smoke but smells like a bit.
Additionally I can notice this is a very hot engine with oil temp up to 102°C / 215°F.
I appreciate your feedback =)
I need your support in order to know from your experience about a 1984 C4 Corvette auto transmission.
I am restoring this car and as part of the challenge I did the emissions test and the result was: 10X over the limit of Hydrocarbons and too much gas on the mix.
How can I solve this issue? Is this just a carburetor issue? In general the car does not smoke but smells like a bit.
Additionally I can notice this is a very hot engine with oil temp up to 102°C / 215°F.
I appreciate your feedback =)
Get the car down to about a 1/4 tank of gas. Go to the nearest drug store and by the 2 pints of 91percent rubbing alcohol pour it in your tank and go get your emissions tested. You'll pass.
