Fairly new to the forum but first post. Usual spiel of hoping I’m in the correct section, and I have searched the forum and the internet for answers but am still not certain of what to do. So here goes…
I’ve got a '93 1.8 Eunos and a few months back had a fairly rapid overheating issue whilst driving, with the gauge increasing and decreases loosely with revs (suspected water pump issue) before rocketing up off the gauge. Soon after, I saw steam from the bonnet and with a minute was able to safely pull over. Fast forward a few months of not driving and I have narrowed the coolant leak to the water pump and oil cooler pipe, as well as a bad radiator cap seal.
Before I forked out to get the parts (waterpump, pipes, gaskets etc. as well as extra bits that should be done at the same time) I thought I’d better carry out a compression test as the car did get very hot. There are no indications to head gasket failure, but car has been idling slightly rough since I’ve had the car (almost a year).
Results were -
First compression - 50 25 25 50
Peak compression - 160 150 125 150
Wet - 195 175 165 180
Noticeably the third cylinder is poor, but I’m not too sure on how to take these results, or what the issue may narrow down to, which is where I’m seeking advice.
I did notice a ‘puff’ on each compression of the 3rd cylinder, sounding as if it went through the exhaust…
The engine is only on 75k miles which is a shame, but I’m also wondering whether it’s worth a re-build as it looks like significant work may need to be carried out, and I intend on keeping this car for a long time.
Sorry for the long post - tried to get my last months’ thoughts and ramblings down in words and seek advice on the compression results and next steps.