Hey everyone, Some background: I'm a relatively new forum member and Sprinter owner. I bought this rough looking van, but what I thought was a good running van this past July. It has 210k miles and I don't really know its service history or how it was treated in its past life. I have been constantly working on it since purchasing, and had finally gotten it to a point where I thought I was done working on it for a while. The Forum has been an invaluable resource for me during this process.
Here is the issue I'm having: Once the engine is warm and accelerating it makes what sounds like a valve tick to me. Its louder when going uphill at highway speeds. Its quiet when at idle or when you rev the engine up in park. The check engine light is off, having the blower fan on or off doesn't make a difference. The oil has recently been changed. Its getting 22mpg and finally has good power after replacing maf and freeing up turbo linkage. I think its a new noise, maybe it wasn't as noticeable before the van got its mojo back.
My questions are: what causes this noise and what can I do to rule out different causes? and if it is internal to the engine can anything be done to "safely" clean or flush the engine? Thanks, I know this is long winded, just wanted to give as much info as possible. I can try and record the noise with my phone when driving to work this afternoon but I don't know if it will be loud enough to be discernable on a recording. Oh, I have not been carrying heavy loads thus far.
Here is the issue I'm having: Once the engine is warm and accelerating it makes what sounds like a valve tick to me. Its louder when going uphill at highway speeds. Its quiet when at idle or when you rev the engine up in park. The check engine light is off, having the blower fan on or off doesn't make a difference. The oil has recently been changed. Its getting 22mpg and finally has good power after replacing maf and freeing up turbo linkage. I think its a new noise, maybe it wasn't as noticeable before the van got its mojo back.
My questions are: what causes this noise and what can I do to rule out different causes? and if it is internal to the engine can anything be done to "safely" clean or flush the engine? Thanks, I know this is long winded, just wanted to give as much info as possible. I can try and record the noise with my phone when driving to work this afternoon but I don't know if it will be loud enough to be discernable on a recording. Oh, I have not been carrying heavy loads thus far.