OHC trouble after engine flush. EDIT : Now Solved!

[ankitahuja]

Guys I recently got my OHC's engine / radiator flushed with injector cleaning and complete servicing done.

I notice that the pick up has gone down a lot, the low end seems to be terrible now with the A/C on. Even though its better with the A/C off but then I feel I need to rev a lot more or turn the A/C off to gain drivability at lower speeds.

What should I check, the ECU must have reset as the battery terminal was also taken off but I tried some harsh driving and red lining her for the ECU to adapt my driving style, no luck!

Is it the heat in Delhi? What effect would a change in compression ratio have (assuming that the flushing opened the natural seals?)

HELP!

[Gurkha]

Is your engine overheating? After all the work done as you describe, the car should be floating in the air but as I read, it got worse. Also get your a/c pressure checked, sometimes overfilling can lead to load on engine.

[GTO]

I'd ask the same thing : Is your engine over-heating? Please go and have your car checked by a competent garage since an engine flush only makes your engine better.

[tsk1979]

How old is the engine?
I have heard that perfectly working old engines go down the flush after an engine flush, cause being the seals going kaput when hardened junk being dislodged.

[Jaggu]

not scaring you but tsk has a point, get the car checked by a competent mech

[ankitahuja]

The engine is not over-heating at all but a bit cooler than before. What's a/c pressure? The a/c was untouched in the process and is the same as before the work was done.

@TSK: the engine is of a 98 OHC with 92k + on the odo. Where do I take her and get WHAT checked? Initially the car ran very very smooth and glided after the work, but its just in the past few days that I felt there was something wrong.

[Hellcat]

@ankitahuja - please check the engine oil level, i hope its not overfilled.

[vivekiny2k]

Originally Posted by ankitahuja

The engine is not over-heating at all but a bit cooler than before.

if it's wayyyyyyyyy cooler than before, you might want to consider thermostat failure (permanent open). my mech said coolant service shud be accompanied by the thermostat replacement. they wear out in course of time.

Car Repair and Maintenance Guide for New and Used Vehicles - Yahoo! Canada Autos

opened thermostat symptoms look similar to ur's.

[Jaggu]

do a compression check first, take it from there if there is a huge variation you have a problem.

sometimes the flush actually removes the 'good carbon' build up which results in compression leak. so if this test is aok move to a proper diagnosis, hook up the ecu reader and check if all the parameters are right. again check plugs and plug wires.

[trulymad]

really sad to hear this best way to flush the engine is by using new but cheap oil and running it for a while before flushing any solvents are very risky to use

[ankitahuja]

Just read the thread:
http://www.team-bhp.com/forum/techni...l-economy.html (Does Weather Affect Fuel Economy)

I face a similar problem it seems, its the heat that makes the car moves like a slug and there definately seems to be a drop in some FE, say about 1kmpl. Night is fine (even though its still HOT at night as well)

@Hellcat - Engine oil level is fine sir.

@vivekiny2k - The engine isn't WAYY cooler at all but marginally cooler, definately a good thing, it does not seem to be a thermostat failure.

@Jaggu - I got the spark plugs changed at the time of service, where should I get all this checked in central Delhi? DONT ask me to go to Honda, they suk!

EDIT: @trulymad - Buddy, what do you mean???

[Gurkha]

Engine should run at its operating temp, so if its running cooler, then the sensor would be confused and send wrong ratio mixture leading to poor drivability, do a total engine scan and find out what the trouble is before it gets out of hand.

[eflanker]

Open radiator cap, start engine.

Leave engine on for 10-15 min

You must get rid of air bubbles

bubbles = damage

[Jaggu]

ankit pm one of the delhi guys they should be able to guide you to a good workshop

[mithun]

Originally Posted by eflanker

Open radiator cap, start engine.

Leave engine on for 10-15 min

You must get rid of air bubbles

bubbles = damage

Is it advisable to run the engine for 10-15 mins(because of the carbon deposits problem) ?