[tooblahlol]

sorry if this is the wrong section.

1997 ek hatchback with a 99 gsr engine obd2 p72 ecu

Issue: very boggy and hesitant around 2-3k rpms

Replaced map sensor, fuel filter, and tps sensor, checked voltages to the 3 tps wires. Replaced spark plugs, distributor cap, wires, rotors, installed skunk 2 intake, 65mm TB.

-only CEL codes for evap emissions

-losing coolant, possibly burning. about 0.5-1.0L every 350k ish. weird thing is I pressure tested it about 2 weeks ago and the cooling system held the pressure.

[ilvtofu]

how is your catalytic convertor?

[snails]

boggy? sounds like its running rich! how does the exhaust smell? un burnt fuel?

[TurboFC3S]

Fuel try changing the ignition coil. Also check fuel pressure
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[predom]

You don't just burn coolant without you noticing. There will be a smell, if you can't see it on the ground, then your headgasket is toast
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[i-vtecyo]

hook up a fuel pressure gauge.

[PJ]

how is your catalytic convertor?

first thing that came to mind too

[skylinergtr]

do a compression test

[tooblahlol]

boggy? sounds like its running rich! how does the exhaust smell? un burnt fuel?

yes

You don't just burn coolant without you noticing. There will be a smell, if you can't see it on the ground, then your headgasket is toast
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I see small amounts leak. I'm talking like a drip sometimes.

hook up a fuel pressure gauge.

Good idea.

do a compression test

would a low compression test mean the head gasket is bad?

[i-vtecyo]

^ could mean rings, head gasket, or valves, but in ur case, if its low + the factor of loss of coolant, possibly head. just start with fuel pressure gauge, and coolant pressure tester again. leave it hooked up over night if u have to at rad cap pressure. also check ur fuel lines for kinks and fuel system for rust holes setting off emissions code.


I see small amounts leak. I'm talking like a drip sometimes.

thats probably why ur low on coolant. if its coming from hose, replace it with new clamps. if its from under the timing cover area, water pump.

[dvst8]

Take out your cat converter and rip around the block. See if it still hesitates. Might be a little loud though. :D

[hk20000]

if only at 2-3k I don't think it's the cat. It's strong as usual past that range?

Take out the sparkplugs and look for one that's just simply very clean. You have coolant in that cylinder.