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Im i have a 300c 3.0 diesel run out of diesel now wont start…

Customer Question
Hi im ian i...

Hi im ian i have a 300c 3.0 diesel run out of diesel now wont start i have derv at injectors still wont fire up done a compression test no compression on 3 cyls only 2.5 lbs on others #

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with a Chrysler. The Chrysler Mechanic I'm going to connect you with knows all the tricks and shortcuts. Are you hoping to fix this yourself?

Yes

Mechanic's Assistant: Great! What have you tried so far?

New filter cracked injectors fuel up there still didnt start , done a compression test no compreesion car ran well till it ran out of derv

Submitted: 2 years ago.Category: UK Car
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Answered in 9 hours by:
3/8/2016
UK Auto Mechanic: Matt, Mechanical Engineer replied 2 years ago
Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 23,616
Experience: BEng hons Mech engineering, in auto industry 22 years
Verified

hello

1st thing to check is if the throttle is being opened when you are doing the compression test?

you don't say what year your 300C is but the later ones use a throttle on the intake to generate vacuum instead of running a pump

if there's no throttle and the compression test results are genuine then I'd repeat the compression test with some oil squirted into the bores as this will increase the pressure generated if the fault is with the piston rings

if the measurement stays the same then the fault is with the valve sealing

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Customer reply replied 2 years ago
Hi it's a 2007 it was running ok before full ran out but only to move in and out of garage having bodywork done so hasn't really been on rd for 7 mths
UK Auto Mechanic: Matt, Mechanical Engineer replied 2 years ago

Hello

Ok

in that case its possible the rings are gummed up?

try some parafinn or redex into each bore and leave to soak for a few days

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UK Auto Mechanic: Matt, Mechanical Engineer replied 2 years ago

Hi

do you still need help?

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