You need to make sure that there is not a o-ring stuck on the engine block from the old filter. sometimes the old gasket will stick to the engine block when you change the oil filter and it will leak everytime. If you don't find the problem there, then you will need to ask your question again.
Perhaps you have used the wrong sand or it is still blowing old sand out of the pipes.
If the air flow is low, a primary filter or return register filters could be clogged, or your blower unit could have a faulty fan. If the air is warm then your condenser unit may need to be recharged/checked for leaks.
The coil is dirty.Hose it out with a water hose.
Car not blowing air or heat
What could you possibly mean by blowing back?Answer 2When you say blowing back, is the fluid in the reservoir airated? It could be that the pump is cavitating or you have a problem on the feed line from the reservoir to the pump if the reservoir is a remote one. Sounds like the pump requires attention. www.powerbrakeandsteering.co.za
could be fuel filter
could be elctrical not turning on compreesor could just be out of freon
It could be as simple as a plugged up fuel filter. Try replacing the fuel filter.
Yes. There are instances where the wrong filter can be installed.
Could be many things but a plugged up fuel filter is where I would start.
Your fuel filter could be clogged up or you could need a new fuel pump.
What type of vehicle could be fuel filter or water in fuel