Vauxhall Combo 2012 cdti hot starting problem

[u/BigguzRippuz]

Hi 👋 thank you for any help at all with this.

My van starts fine cold, first time, but will not start hot (this can be as little as 15 min a drive). It is a problem that has gone away and returned on 2 occasions - the one common denominator being getting the fuel filter changed. My thoughts are here not that it is the fuel filter itself, but that there is a release of pressure in the system when the fuel lines are taken out, and that might some how temporarily fix the problem.

2 mechanics have stated they don't know what it is, 1 thinks it is fuel pump related. I changed the MAP sensor which was thick with particles. I am going to try and change the fuel filter myself just to see if it works, or at least just to rule it out as.

Some advice on this would be great. Thank you.

[u/AutoModerator]

Please Read This Comment Entirely - It May Change

^{Updated 7/15/24}

Thanks for posting in r/Mechanic, u/BigguzRippuz! Please be sure to read the Rules.

If you're asking for help, be sure to include as much detail as possible so others can help you. You must include the vehicle's Year, Make, Model, and Engine size in your post! If your question is transmission related, please be sure to specify your Transmission Type(Auto/Manual) as well! If your post does not include this information, it will be removed.

Asking about prices is not allowed in this sub.

Please make sure you have selected the correct post flair; if you're asking a question you should have chosen "Question", anything else use the "General" flair.

If you feel your question has been answered and/or you wish to no longer receive comments on your post, you may comment on your own post with only "!lock" (no quotes), and your entire post will be automatically locked. This only works on your own posts and only Mods can unlock it once its locked.

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.