Honda Civic 1992-1995 EG Engines: compression, specs and system backpressure
06-23-2009, 05:19 PM
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Honda Civic 1992-1995 EG Engines: compression, specs and system backpressure
To see the original article with images check it out here: Honda Civic Engines. Garage411.com
Engine Compression
Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions.
Do not use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle valves wide open and at specified cranking speed. Crank engine at least 6 revolutions to determine engine compression.
Engine Compression Specs
Maximum variation between cylinders is 28 psi (2.0 kg/cm2 ).
Exhaust system can be checked using a vacuum or pressure gauge. Remove oxygen sensor (O2S) or heated oxygen sensor (HO2S). Connect a 0-5 psi pressure gauge, and run engine at 2500 RPM. If exhaust system backpressure exceeds 1 3/4 - 2 psi (.12-.14 kg/cm2 ), exhaust system or catalytic converter is plugged.
If using a vacuum gauge, connect vacuum gauge hose to intake manifold vacuum port and start engine. Observe vacuum gauge. Open throttle part way and hold steady. If vacuum slowly drops after stabilizing, check exhaust system for restrictions.
To see the original article with images check it out here: Honda Civic Engines. Garage411.com
Engine Compression
Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions.
Do not use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle valves wide open and at specified cranking speed. Crank engine at least 6 revolutions to determine engine compression.
Engine Compression Specs
Maximum variation between cylinders is 28 psi (2.0 kg/cm2 ).
- Non B16A Engine:o Standard psi (kg/cm2 ): 185 (13.0) at 250 rpm
o Minimum psi (kg/cm2 ): 135 (9.5) at 250 rpm - Non B16A Engine:o Standard psi (kg/cm2 ): 220 (13.0) at 250 rpm
o Minimum psi (kg/cm2 ): 135 (9.5) at 250 rpm
Exhaust system can be checked using a vacuum or pressure gauge. Remove oxygen sensor (O2S) or heated oxygen sensor (HO2S). Connect a 0-5 psi pressure gauge, and run engine at 2500 RPM. If exhaust system backpressure exceeds 1 3/4 - 2 psi (.12-.14 kg/cm2 ), exhaust system or catalytic converter is plugged.
If using a vacuum gauge, connect vacuum gauge hose to intake manifold vacuum port and start engine. Observe vacuum gauge. Open throttle part way and hold steady. If vacuum slowly drops after stabilizing, check exhaust system for restrictions.
To see the original article with images check it out here: Honda Civic Engines. Garage411.com
Last edited by Master23; 07-01-2009 at 05:04 PM.
06-23-2009, 06:00 PM
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Re: Honda Civic 1992-1995 EG Engines: compression, specs and system backpressure
Do not use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
How could that create a fire hazard? And how could it contaminate the engine's oiling system? Can you explain more.
Non B16A Engine:
o Standard psi (kg/cm2 ): 220 (13.0) at 250 rpm
o Minimum psi (kg/cm2 ): 135 (9.5) at 250 rpm
o Minimum psi (kg/cm2 ): 135 (9.5) at 250 rpm
Shouldn't that be for "B16A Engine" and not "Non B16A Engine" as the first one is for non b16a engine?
06-23-2009, 06:59 PM
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Re: Honda Civic 1992-1995 EG Engines: compression, specs and system backpressure
Whenever you inject fuel but don't burn it, some passes around the rings and into the crankcase. In the absence of ignition, it also washes the cylinder walls, which is not a good thing.
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