The Jag Den

Diesel cold start problem

Recommended Posts

Can anybody help please?

My S-Type diesel fires up first time every morning but then settles to a very lumpy idle and is not keen on revving. There are no warning lights. Produces white fumes from the exhaust which I believe are the result of unburnt diesel being ejected from the exhausts. This happens even if I switch the ignition on several times to make the golw plugs operate before firing the engine.

Within 5 minutes, this settles down and the engine runs sweet as a nut.

Re-starting any time afterwards after say, a few hours and it runs exactly as it should.

Any ideas or info would be appreciated please.

Share this post


Link to post
Share on other sites

Hi Denis

I would say you have a leaking injector it only takes a small overnight leak to produce the symptoms 

you are having .???

 

Frank

Share this post


Link to post
Share on other sites

Thanks for the advice Frank, Denis and I were wondering whether it might be a glow-plug perhaps.

Share this post


Link to post
Share on other sites

Hi Paul

there mainly for starting

but there easy to check if you remove the connector or wiring from each one in turn, I'd disconnect battery for safety reasons

the resistance should be very low like 0.05 ohms to 1.5 ohms resistance with a meter

if you have a dc clip on ammeter you can check there pulling current in amps without disconnecting anything

they usually go open circuit, basically burn out, cheep glow plugs can last as little as 12 month known brands can last years

cheers

joe

Share this post


Link to post
Share on other sites

@The Jag Den

@Raistlin

Hi Denis/Paul,

I have recently had a similar cold starting issue that Denis had, but without the white smoke. A bit lumpy when first started,  but only when 5°C or under. After warming up engine runs and starts fine. Any suggestions on the fault, from yourselves or anybody else, would be appreciated.

Cheers

Mark

2007 td S Type sport 51k

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...