I have a 86 ram 50 with a 2.0 engine. The other day while at idle my engine developed a loud valve train tick. I immediately shut it down. I noticed the oil light was on. Do you think I lost oil pressure due to a pump failure. Has anyone replaced an oil pump on this engine before. Has anyone ran into this before. I have not fired the engine sense. I just don't want to pay time and money to do this job, and find out it wasn't the issue. Any help would be great. Thank you