I was wondering I have bubbles comming out of the head bolt betwwen the two injectors. It happens after I work it hard can I just tighten it up are do I have bigger problems. I have the L1801 also.
Welcom to the forum
Do you keep the fluid level in the radiator FULL and checked frequently?
That is critical to this engine set up!!! I have observed on mine with at guage that letting the water level get only as low as the bottom of the tube coming down from the cap opening wil let temp climb as much as 30°
THat is a huge increase!
Another question could be what are the bubbles made of? It could be return fuel leaking and bubbling, or coolant bubbling from the heat. Just raising some questions.
The coolant system should hold about 10-13psi when running at full temp so if the bubbles are coolant then a leaking gasket could be possible or a compression leak could do the same.
It is worth torqueing the head bolt to verify that it is tight.
The test to also run would be a "coolant system pressure test". If you get bubbles with this test then a leak is deffinately in the coolant system and you would need to determine if it was the head or gasket.
Pulling the head to replace the gasket would be a given at this point so the the head can simply be inspected at that time too.
