Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
If vehicle has spark and fuel pressure next thing to check would be compression. These engines are known for timing chain problems, if chain jumped it will cause low compression. Compression should be at least 140 psi. Let me know if you have more questions or if there is anything else I can do to help. Thanks.
Unplug the mass airflow sensor let me know if that helps. Thanks.
Does it run if you spray starting fluid into intake?
100 psi is definitely low and any type of starting fluid works. If spark is good but it doesn't run on starting fluid then I suspect a timing chain issue. 100 psi is borderline starting.
What is your vin number? I'll upload repair procedure for you. Thanks.
I'll just give you login information for a online database, there are many pages of documents so this is easiest. Here is the information, let me know if you have questions. Thanks.