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Will dirty oil cause a psd to be hard to start? this may sound like a stupid ? but a buddy of mine swears that it will.
 

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it could...it'd have to be pretty dirty tho....HEUI runs off the engine oil, so it is possible. they like clean oil......
 

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The injectors are hydraulically actuated, if I remember right. Dirty oil might lead to improper fuel delivery, which I'd guess cause starting issues.
 

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probably wont help, if sludge starts to build up i suppose it could cause it to start poorly.
 
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