Question about 1989 Honda Prelude

2 Answers

Overheating and timing off

I redid the head on my 89 prelude(dual overhead cam fuel injected 2.0)last year and now i have overheated it somehow.i have changed the thermostat twice and i just took the water pump off and it looks fine.i did however run water in it during the summer instead of coolant.i put coolant/antifreeze in it when it started turning cold and then it started overheating.i did a cooling system flush before i put in antifreeze.i cannot figure out why its overheating.any suggestions?i also noticed when i took the crankshaft bolt off that my timing needle wasnt lined up but my camshaft gear arrows both point up.how do i fix this?any info is very much appreciated

Posted by on

  • phylersphan1 Jan 29, 2009

    i didnt do anything to the head.i put a straight edge on it and it wasnt warped.i have run a cooling system flush through it to get rid of corrosion.i would assume the damage was already done.what should the compression tester read?

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 68 Answers

Do u know tHAT ANTI-FREEze/coolant should not be used alone in a cooling system? There are some coolants though that can be used just as it is in its concentrated form. But coolant is usally used in a 50:50 ratio ie half water half coolant. Too much coolant tends to corrode walls and ports. This can cause debris to possibly block the circuit, especially in the radiator. What u should check is to c if the water/coolant level drops when u overheat. That mean ur loosing pressure somehwere in the cooling system via a leak. Then u shiould c where the leak is coming from.

With reference to ur timings, if ur timings were out then ur vehicle wouldn't have start. I don't know about ur vehicle timings and the markings. But the basic principle is that the engine would usually be timed on #1 cylinder. U make sure #1 cylinder is placed on compression and the cams on the camshaft for #1 cylinder must be set in such a way that the valves must be closed. There are always markings though to know how to align for timings

Posted on Jan 29, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 112 Answers

First of all, the overheating could have caused your engine to tighten up, which would account for the cams jumping a few teeth. Obviously being made from aluminium.
You should run coolant in the summer because it stops corrosion inside the cooling system.
When you redid the head gasket, did you have the head fly-cut or planed.
It should have been fly-cut.
It sounds like your head gasket has a leak between the water jacket and one of the cylinders.
This is causing the overheating.
That`s my best guess as I have had the same trouble with customers cars in the past.
Get a compression tester from an auto store and check pressures.
It screws into the spark plug holes

Posted on Jan 29, 2009

  • Steve Draper Jan 29, 2009

    I don`t know what the compression tester should read.
    Its all to do with the stroke and compression ratio of the cylinders.
    Just screw it into a plug hole after removing ignition leads(mark them) and get someone to crank the engine for a few turns. Make a note of the reading.
    Do this to each plug hole in turn.
    If you get a low reading between two cylinders, then the gasket has blown in that region between the cylinders.
    You can easily identify where it`s leaking if its a low reading on one cylinder.
    When you remove the head, it will warp, only slightly, but it will.
    A straight edge will not give you a true reading.
    From what you have told me, it definitely sounds like the head gasket has blown again.


×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I have a 89 pontiac firebird Trans Am "GTA" 5.7L tuned port injected. My engine gets hot somehow and my car has a quick start but lower power afterward. What could the problem be?


Fix the radiator cooling problems. You will damage the engine if you keep running the car in an overheated condition.

1. Replace the thermostat in the cooling system
2. Replace the water pump
3. Flush the cooling system thoroughly and re-fill with the correct coolant. Bleed any air out of the system otherwise you will have problems with air blockages and thus poor coolant flow.

You probably do not know how to do any of this so take it to a reputable workshop or cooling specialist to have it done.

Dec 25, 2012 | 1989 Pontiac Firebird

1 Answer

How to remove the cylinder head on a jeep cherokee 4.7l


There are several configurations of engines; the older overhead valve conventional cam, overhead valve with overhead cam or cams utilizing chain drive, overhead cam engines with staggered chain drive, gear driven overhead cams and the most common belt driven overhead cam engines. Although each engine has its own specifications, developing the skills to remove Autocome cdp pro

Apr 27, 2012 | 2006 Jeep Grand Cherokee

2 Answers

Gentlepersons... have 1992SL1 engine died... gong to replace it ,,, but all involved want to know engine type dual cam? vs ? ... can you tell me how to determine whats in the car now.. vin# nails it...


That is pretty easy. If your Saturn is an SL1 it is single cam if it is an SL2 it is dual cam. That is the only difference between an SL1 and an SL2 - Saturn didn't even bother to put a tag or emblem anywhere on the body to differentiate between the the two models. The 8th digit in the VIN will confirm this for you. If the 8th digit is "7" it is a Dual Overhead Cam (DOHC) engine. If the 8th digit is a "9" then it is a Single Overhead Cam (SOHC) engine. When you have seen both engines, it is pretty obvious by simply looking at them. The DOHC cam cover is much wider and has 2 "humps" with spark plugs and wires going down the center between the humps. The SOHC cam cover is narrow and the plugs and wires go down one side.

Also in the 1992 model year, the DOHC engine was equipped with Multiport Fuel Injection. (MFI) The fuel injectors (4 of them) were located in the top of the intake manifold. The SOHC engine had Throttle Body Injection (TBI) The two injectors were located in the throttle body.

I don't have any pictures of the cam covers, but I have pictures of the cam cover gaskets (AKA Valve Cover Gaskets) you can very easilly see the difference.


dttech_59.gif
dttech_60.gif

Apr 28, 2011 | 1992 Saturn SL1

1 Answer

Need to retime after broken timing belt. Had the head on a 2.0 liter dual overhead cam rebuilt after it overheated. need to replace head and retime cams and crank, etc. when installing new belt. need to...


You should be able to get this info form the shop that rebuilt the head, or you can go on-line to one of the parts stores web sites and get this info. good luck.

Jan 03, 2011 | Kia Sportage LX Cars & Trucks

1 Answer

Motor mount in front of timing belt needs replaced. on a 1988 honda prelude si with a 2.0 fi engine dual overhead cam


well get on with it its not difficult,jack under engine with a block of wood on it ,take weight of engine and then change mount

Oct 24, 2009 | 1988 Honda Prelude

1 Answer

Hello my name is jackye and i have a 2002 ford focus zts mach audio, dual overhead cam, automatic. we have been having problems with the car overheating. well we have done repaired leaks replace hoses,...


If you purchased used beware that the indicator light may have been broken to hide this problem. If the vehicle worked normal since you purchased it the indicator light is probably inop or broken.

Flush the radiator first. If it still persists, replace the thermostat. Get this fixed because you do not need a warped head.

Jul 08, 2009 | 2001 Ford Focus

2 Answers

Oil and water in cylinders killing spark


Most likely a severely blown head gasket or a warped head,was the motor overheated?

May 30, 2009 | 1998 Mercury Mystique

1 Answer

1989 Toyota Land Cruiser overheating- REPLACED ENTIRE COOLING SYS


Do a cylinder leak down test. Hook up a airline to each spark plug hole. Bring each cyclinder to tdc and listen for air leak. Possibly in the radiator. You can also reverse the process by doing a radiator leak down test. If you hear bubbling in the radiator bad head gasket. Remove and replace head gasket.

Jan 09, 2009 | Honda Accord Cars & Trucks

1 Answer

1993 Saturn SW styles


SW1 is a single overhead cam. SW2 is a dual overhead cam both have multi port injection.

Dec 16, 2008 | 1993 Saturn SW1

Not finding what you are looking for?
1989 Honda Prelude Logo

141 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

yadayada
yadayada

Level 3 Expert

60960 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Honda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...