OHC trouble after engine flush. EDIT : Now Solved!

ankitahuja · 11th June 2007, 02:06

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 · 11th June 2007, 06:48

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 · 11th June 2007, 09:38

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 · 11th June 2007, 10:20

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 · 11th June 2007, 10:22

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

ankitahuja · 11th June 2007, 18:12

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 · 11th June 2007, 18:23

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

vivekiny2k · 11th June 2007, 18:42

Quote:

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 · 11th June 2007, 19:02

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 · 11th June 2007, 20:25

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 · 11th June 2007, 21:54

Just read the thread:
http://www.team-bhp.com/forum/techni...l-economy.html

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 · 11th June 2007, 22:00

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 · 11th June 2007, 22:03

Open radiator cap, start engine.

Leave engine on for 10-15 min

You must get rid of air bubbles

bubbles = damage

Jaggu · 12th June 2007, 10:39

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

mithun · 20th June 2007, 07:01

Quote:

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) ?

11th June 2007, 02:06	#1
ankitahuja BHPian Join Date: Oct 2006 Location: Gurgaon Posts: 921 Thanked: 94 Times View My Garage	OHC trouble after engine flush. EDIT : Now Solved! 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!
	() Thanks

11th June 2007, 06:48	#2
Gurkha BANNED Join Date: Aug 2005 Location: Kalyani, West Bengal Posts: 444 Thanked: 10 Times	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.
	() Thanks

11th June 2007, 09:38	#3
GTO Team-BHP Support Join Date: Feb 2004 Location: Bombay Posts: 70,534 Thanked: 300,737 Times View My Garage	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.
	() Thanks

11th June 2007, 10:20	#4
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,717 Thanked: 22,825 Times View My Garage	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.
	() Thanks

11th June 2007, 10:22	#5
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	not scaring you but tsk has a point, get the car checked by a competent mech
	() Thanks

11th June 2007, 18:12	#6
ankitahuja BHPian Join Date: Oct 2006 Location: Gurgaon Posts: 921 Thanked: 94 Times View My Garage	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.
	() Thanks

11th June 2007, 18:23	#7
Hellcat BHPian Join Date: Jul 2005 Location: Bangalore Posts: 222 Thanked: 5 Times View My Garage	@ankitahuja - please check the engine oil level, i hope its not overfilled.
	() Thanks

11th June 2007, 19:02	#9
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	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.
	() Thanks

11th June 2007, 20:25	#10
trulymad Newbie Join Date: Jul 2005 Location: Mumbai Posts: 2 Thanked: 0 Times	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
	() Thanks

11th June 2007, 21:54	#11
ankitahuja BHPian Join Date: Oct 2006 Location: Gurgaon Posts: 921 Thanked: 94 Times View My Garage	Just read the thread: http://www.team-bhp.com/forum/techni...l-economy.html 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??? Last edited by ankitahuja : 11th June 2007 at 21:55.
	() Thanks

11th June 2007, 22:00	#12
Gurkha BANNED Join Date: Aug 2005 Location: Kalyani, West Bengal Posts: 444 Thanked: 10 Times	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.
	() Thanks

11th June 2007, 22:03	#13
eflanker BHPian Join Date: Jul 2006 Location: BLR Posts: 88 Thanked: 2 Times	Open radiator cap, start engine. Leave engine on for 10-15 min You must get rid of air bubbles bubbles = damage
	() Thanks

12th June 2007, 10:39	#14
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	ankit pm one of the delhi guys they should be able to guide you to a good workshop
	() Thanks