High hydrocarbons

What is your question?

Trucked passed emissions except for gas cap Took truck back 1 month later and it failed Hidrocarbons went from 10 - 765 Plugs and rotor were just changed but can't figure out as to why the hydrocarbons jumped so high Catalytic converter passed so it can be ruled out for repair Any suggestions ?? Dave

What makes this problem better or worse?

Truck has No problems runs great

How long has your 1995 Chevrolet C2500 had this problem?

1 month

Davehillen124 in Hagerstown MD

May 9, 2018

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What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1995 Chevrolet C2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Popular Answer

High hydrocarbons

What is your question?

What makes this problem better or worse?

Truck has No problems runs great

How long has your 1995 Chevrolet C2500 had this problem?

1 month

Davehillen124 in Hagerstown MD

May 9, 2018

2 Replies

Popular Answer

Danny Ruyteron May 10, 2018

Hydrocarbons are simply raw or UN-burned fuel. Simply perform diagnostics on any item that could cause the fuel not to burn correctly. Start by checking for incorrectly installed or cracked spark plug. If they HC was good before the tune up then recheck the tune up work. Good Luck.

Davehillen124on May 10, 2018

I replaced plugs and dis cap. The readings was the same a 3ed time.

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Danny Ruyteron May 10, 2018

A lot of items can contribute to this. Can you come by the shop and Ill listen to the engine and give you some advice?

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Popular Answer

What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1995 Chevrolet C2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.