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Leaking Valve Stem Seals Or Injectors?

dori34

By dori34,
in Engines & Forced Induction

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dori34 Grand Master

dori34

Posted
Posted

hi guys, this issue has been happening more frequently over the past 2 months or so. i use to get the pop after trying to start before on cold days but it never gave a puff of smoke.

basically on cold start up or even after i stop driving and trying to start again after 30mins-2hrs, it is very hard to start.

it would crank, and feel like its going to start then it would pop and will not start, so i'd have to crank again and keep holding it and then it would start after sounding like a struggle, then a puff of white smoke would come out.

after googling, and doing some searching on here, it could either be leaking injectors or valve stem seals.

after about ~1.5years since the rebuild, i noticed there were some dirt residue around the injectors which i assume they were leaking an dirt has stuck to it. i do notice around the base of the injector where it sits in the plenum its wet, but it doesn't drip out fuel, is this normal?

anyone have an idea what it could be?

engine: rebuilt rb25det neo

ecu: haltech PS1000

injectors: hiflow standard injectors 600cc

any help much appreciated.

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

I check the start up issue it for u if u want. Best bet is to test the injectors on the bench and see if they dribble

Does it use any oil? Is there any oil residue on the spark plugs?

Do all spark plugs look the same?

dori34 Grand Master

dori34

Posted
  • Author
Posted

sure, that would be sweet Jez, how do i save the map file to send to you? i got the software and cable on my laptop.

last service i did, there was no oil on the spark plugs,

the service before the most recent, plug #6 tip was white but the most recent change it was normal and all were the same.

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