Evaporative emission system leak detected (gross leak/no flow) any ideas what is causing the problem

Asked by Feb 27, 2012 at 06:03 PM about the 1999 Mazda MX-5 Miata Base

Question type: Maintenance & Repair

Chech engine lite came on P0455 code detected

2 Answers

3,445

Could be as simple as forgetting to replace the cap after filling gas tank. Barring that, a defective cap will cause same. If neither of those are the culprit, you'll need to look over the EVAP system plumbing for cracked hoses, loose connections, etc. This is the system that routes fuel vapors from the tank to the intake manifold to be burned rather than just vent to atmosphere like the old cars did. A good repair shop will have equipment called a smoke generator. They will hook it up to the system and it presurizes the plumbing and fills it full of smoke. Finding where smoke is escaping will pinpoint the offending leaks. Good luck!

4 out of 4 people think this is helpful.

Thanks for the info, off to the mechanic I go.

Your Answer

Add photo

Related Questions

Search Mazda MX-5 Miata Questions

Mazda MX-5 Miata Experts

#1 Michael Kane
Michael Kane
Reputation 1,860
#2 Tom Demyan
Tom Demyan
Reputation 1,090
#3 Racer_X
Racer_X
Reputation 380
View All

Related Models For Sale

Used Ford Mustang
718 Great Deals out of 39,150 listings starting at $1,000
Used Honda S2000
13 Great Deals out of 361 listings starting at $8,495
Used Chevrolet Corvette
367 Great Deals out of 20,434 listings starting at $3,688
Used BMW 3 Series
1,836 Great Deals out of 41,344 listings starting at $1,250
Used Chevrolet Camaro
630 Great Deals out of 39,689 listings starting at $2,995
Used Honda Civic
1,173 Great Deals out of 67,656 listings starting at $1,500
Used Porsche Boxster
61 Great Deals out of 1,496 listings starting at $4,750

Used Cars For Sale

2016 Mazda MX-5 Miata For Sale
12 Great Deals out of 2,768 listings starting at $19,488
2015 Mazda MX-5 Miata For Sale
9 Great Deals out of 170 listings starting at $14,788
2014 Mazda MX-5 Miata For Sale
8 Great Deals out of 109 listings starting at $14,500
2013 Mazda MX-5 Miata For Sale
6 Great Deals out of 140 listings starting at $13,500
2012 Mazda MX-5 Miata For Sale
4 Great Deals out of 117 listings starting at $10,995