So I see a lot of baubles between lift pump and secondary filter. While pumping with prime pump, The babuls are really fine but a lot almost like in sparkles wine.




The car runs ok ish, There is a lot of engine shaking if I rev up the engine and then bring it down, I can feel that shake when car is costing. From what I read this is often good example of air in fuel problems.

Now How I should debug that?

- I do not see any leaks on primmer pump
- No leaks around primary filter

My currently plan is to
1. replace the black lines between metal line -> primary filter and primary filter -> lift pump with clear line, see if there are babbles
2. If not babbles replace primer pump
3. If still babbles replace line between filter and lift pump.
4. ?????

What you think about this plan ? What else would you do ?