[xavier65]

Hello my 1993 E34 525iT runs rough when it is cold starts running fine when it warms up, and recently failed emissions any help would be great

 

[xavier65]

Hello my 1993 E34 525iT runs rough when its cold, after it warms up it runs better and it recently failed emissions any help would be great. thanks

 

[jclbmw]

any idea what it failed for? hydrocarbons, carbon monoxide, NOx? if you can tell me what it failed for, i may be able to provide some ideas.

 

[xavier65]

Hello jclbmw thanks for replying well here they are. emission readings 397 CO%1.06 state standards 175 CO% 1.00 Dilution Check CO + CO 2 % 11.44 6.00 PASS, Gas Cap Test - PASS, Catalytic Converter Check- PASS I hope you can help . Thanks, Xavier65