There are lot of engine compression testers to choose from and many places to buy them. OK, having covered the most common scenarios of low compression and no compression, let's get testing to see if this is the case on your 1.8L Mazda Protegé equipped vehicle. The most common causes of no compression on 2 or all 4 cylinders are:.Fuel pump is working and providing pressure.Also, you can confirm this, although indirectly, by removing the spark plugs and checking to see if they are fuel soaked (fuel fouled).You can confirm this with a Noid Light test.This tells you that the no-start condition is not caused by a fault in the ignition system.The Ignition System is sparking all 4 spark plugs.This fast cranking speed is very noticeable.This usually is caused by having 2 or all 4 cylinders with no compression. If the air/fuel mixture isn't compressed within a certain range, it won't burn optimally and produce more unburned hydrocarbons escaping into the exhaust.This is caused engine not producing its optimal power output since the air/fuel mixture isn't being combusted with adequate compression pressure.Check engine light on with misfire codes:.Uneven engine compression that varies more than 15% across all 4 cylinders.Usually caused by very low compression in one cylinder or.Also known as an engine miss, rough idle condition.In this section we're gonna' analyze both types of problems and see the specific symptoms they produce:Įngine Starts but Runs with a Misfire (Rough Idle): Either the engine starts but misfires (runs rough), or the engine doesn't start at all. Symptoms Of Low Or No Engine CompressionĪs I mentioned at the beginning of the tutorial, engine compression problems fall into 2 different categories. You can find this tutorial in Spanish here: Cómo Probar La Compresión Del Motor (1995-2000 1.8L Mazda Protegé) (at: ). Interpreting Your Compression Test Results.Symptoms Of Low Or No Engine Compression.

1991 mazda protege 1.8l oil capacity