high rpm flat spot and lots of smoke - Alfa Romeo Forum
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(Post Link) post #1 of 4 Old 03-09-16 Thread Starter
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high rpm flat spot and lots of smoke

new problem has developed... i have an 07 2.4jtdm 159 with DFP delete and remap, plus restricted EGR.

she has developed a flat spot after 3k rpm and when she hits that spot she chucks out a lot of black smoke i mean alot. i'm guessing i have a boost leak but she holds 1.5 bar of boost as she always has done.

I'm going to do an EGR and map sensor clean today, is there anywhere common i could check for a cause to this while i'm under the bonnet?

thanks
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Could be injectors?! Get some cleaner through!?
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restricted or blocked EGR?

restricted doesn't do much, so clean the EGR valve. if blocked, I'd check if the blockage isn't burst.
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(Post Link) post #4 of 4 Old 03-09-16 Thread Starter
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Quote:
Originally Posted by Cuore_Sportivo_155 View Post
restricted or blocked EGR?

restricted doesn't do much, so clean the EGR valve. if blocked, I'd check if the blockage isn't burst.
one of those gaskets with 4 holes in... its been there since we got it so I left it on incase its needed for the map (the map dpf delete and egr was all done by previous owner)
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