heavy rattle on start up

[dyte]

hi guys any idea what would cause a heavy rattle on start up its just on start up and lasts about 1 second any clues would be great

[BUSHWHACKER]

You need an oil change.

[dyte]

i thought this at frist but it sounds like there might be somthing loose quite a heavy rattle could this be as simple as a lack of oil or degraded oil

[BUSHWHACKER]

i thought this at frist but it sounds like there might be somthing loose quite a heavy rattle could this be as simple as a lack of oil or degraded oil

Yup. If the noise goes after a couple of seconds, then the oil has lost it's clingyness (sp) and needs replacing.

[coolsv650]

hi guys any idea what would cause a heavy rattle on start up its just on start up and lasts about 1 second any clues would be great

Do you mean on start up everytime or when cold?


I have the same engine and I get a rattle on 1st start up on a morning or after leaving the vehicle about 4-5 hours.

Although my noise is diesel knock I suppose you could say it sounds like dragging a manhole accross the road, that noise is caused by the fuel being sprayed into the engine in advance of it's normal time, most diesel engines do it as part of the cold start procedure & it's nothing to worry about.

Saying that though, for the cost of oil & a filter it's worth changing the oil, it's a much cheaper than wiping the big ends out!

[Wild Thing]

Do you mean on start up everytime or when cold?


I have the same engine and I get a rattle on 1st start up on a morning or after leaving the vehicle about 4-5 hours.

Although my noise is diesel knock I suppose you could say it sounds like dragging a manhole accross the road, that noise is caused by the fuel being sprayed into the engine in advance of it's normal time, most diesel engines do it as part of the cold start procedure & it's nothing to worry about.

Saying that though, for the cost of oil & a filter it's worth changing the oil, it's a much cheaper than wiping the big ends out!

I agree on this one, also if you're using veg oil it will rattle a bit more, drop the percentage of vegi to diesel

[dyte]

it dose it when hot or cold sometime not at all checked the oil this morning and it not in great shape proberly is the cause thanks for your help guys